CN206851025U - Acoustical generator and the sonification system including the acoustical generator - Google Patents
Acoustical generator and the sonification system including the acoustical generator Download PDFInfo
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- CN206851025U CN206851025U CN201720790751.7U CN201720790751U CN206851025U CN 206851025 U CN206851025 U CN 206851025U CN 201720790751 U CN201720790751 U CN 201720790751U CN 206851025 U CN206851025 U CN 206851025U
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- vibrating diaphragm
- acoustical generator
- induction coil
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- control circuit
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Abstract
The utility model discloses a kind of acoustical generator, vibrational system and magnetic circuit system including shell and in the shell, the vibrational system includes vibrating diaphragm and the voice coil loudspeaker voice coil being fixed on below the vibrating diaphragm, the vibrating diaphragm is provided with the first induction coil of electrical connection external control circuit, first induction coil produces electric current during diaphragm oscillations and to outside control circuit output electric current, the invention also discloses a kind of sonification system including the acoustical generator, the utility model can detect the actual vibration displacement of vibrating diaphragm in real time, vibrating diaphragm performance is given full play in the case where protecting vibrating diaphragm, improve acoustical generator voice quality and service life.
Description
Technical field
It the utility model is related to electroacoustic switch technology field.More particularly, to a kind of acoustical generator and including the sounding
The sonification system of device.
Background technology
Acoustical generator is a kind of device that can convert electrical energy into acoustic energy, belongs to most basic phonation unit, and it extensively should
For in the terminal devices such as mobile phone.
Acoustical generator includes the shell formed with receiving space and the vibrational system being contained in shell and magnetic circuit system, vibration
System includes vibrating diaphragm and voice coil loudspeaker voice coil, and voice coil loudspeaker voice coil electrically connects shape by two voice coil leads of extraction with the positive and negative electrode of external control circuit
Into loop, electric energy is inputted voice coil loudspeaker voice coil by external control circuit via voice coil leads, and voice coil loudspeaker voice coil is produced by the effect of magnetic circuit system Ampere force
Raw vibration, voice coil vibrations drive diaphragm oscillations sounding, so that electric energy is converted into acoustic energy, realize the vocal function of acoustical generator.
The voltage or power of external control circuit input acoustical generator are bigger, and the Ampere force that voice coil loudspeaker voice coil is subject to is bigger, and vibrating diaphragm is in sound
Oscillation Amplitude under the drive of circle is bigger, and diaphragm oscillations scope is excessive to be likely to result in vibrating diaphragm failure, acoustical generator damage.It is logical at present
The voltage of input voice coil loudspeaker voice coil or the limit value of power are often set by algorithm in external control circuit, makes the vibration position of vibrating diaphragm at work
Move and be in all the time in the safe range less than the limit value.But this method can not detect the actual displacement of vibrating diaphragm in real time,
Be likely to result in vibrating diaphragm actual amplitude it is excessive and cause vibrating diaphragm fail situation.In addition, the method can not be according to the reality of vibrating diaphragm
The voltage or power of border Vibration Condition adjustment input, it is impossible to play the maximum function of vibrating diaphragm.
Accordingly, it is desirable to provide a kind of acoustical generator that can detect diaphragm oscillations displacement in real time, in the case where protecting vibrating diaphragm
Vibrating diaphragm performance is given full play to, improves acoustical generator voice quality and service life.
Utility model content
A purpose of the present utility model is to provide a kind of acoustical generator, detects the vibration displacement of vibrating diaphragm in real time, protecting
Give full play to vibrating diaphragm performance in the case of vibrating diaphragm, improve acoustical generator voice quality and service life, it is of the present utility model another
Purpose is to provide a kind of sonification system including the acoustical generator.
To reach above-mentioned purpose, the utility model uses following technical proposals：
The utility model discloses a kind of acoustical generator, including shell and the vibrational system in the shell and magnetic circuit system
System, the vibrational system include vibrating diaphragm and the voice coil loudspeaker voice coil being fixed on below the vibrating diaphragm,
The vibrating diaphragm is provided with the first induction coil of electrical connection external control circuit, and first induction coil shakes in vibrating diaphragm
Electric current is produced during dynamic and to outside control circuit output electric current.
Preferably, the vibrating diaphragm includes connecting positioned at the vibrating diaphragm central part in vibrating diaphragm center and with the vibrating diaphragm central part edge
The vibrating diaphragm edge part connect；
First induction coil is fixed on the vibrating diaphragm central part.
Preferably, the vibrating diaphragm vibrating diaphragm central part includes body central portion and is incorporated in body central portion surface
Reinforcement central part,
First induction coil is fixed on a side surface of reinforcement central part described in body central portion on-fixed,
Or the surface in the remote body central portion of the reinforcement central part is fixed on,
Or it is fixed on the side that the reinforcement central part is combined with the body central portion.
Preferably, the reinforcement central part is provided with the concave part for accommodating first induction coil.
Preferably, the shell is provided with the electrical connector for being used for electrically connecting external control circuit, first line of induction
Circle is drawn two lines circle lead and electrically connected with the electrical connector.
Preferably, the shell is provided with corresponding with first induction coil for electrically connecting external control circuit
Second induction coil.
Preferably, the shell is provided with the electrical connector for being used for electrically connecting external control circuit, second line of induction
Circle electrically connects with electrical connector.
Preferably, the electrical connector is FPCB plates.
The invention also discloses a kind of sonification system, the sonification system includes acoustical generator as described above and outside control
Circuit processed；
The external control circuit is used to, based on the output current signal from first induction coil, control acoustical generator
Inputing power.
Preferably, the external control devices is intelligent power amplifier.
The beneficial effects of the utility model are as follows：
According to the utility model, first induction coil is set on acoustical generator vibrating diaphragm, external control circuit is to voice coil loudspeaker voice coil
Electric energy is conveyed, voice coil loudspeaker voice coil is acted in magnetic field caused by magnetic circuit system by Ampere force, and then drives diaphragm oscillations, is arranged on and shakes
The first induction coil on film with vibrational system is vibrated while cutting magnetic field magnetic induction line, produce electric current.With vibrating diaphragm
The difference of amplitude, size of current caused by the first induction coil cutting magnetic induction line are also different.By detecting on the first induction coil
Caused size of current, the actual vibration displacement of vibrating diaphragm can be accordingly obtained, according to the testing result of diaphragm oscillations displacement, by outer
The electric energy of portion's control circuit adjustment input voice coil loudspeaker voice coil, while vibrating diaphragm is protected, can give full play to the vibration performance of vibrating diaphragm, improve hair
Sound device tonequality and volume, extend the service life of acoustical generator.
Brief description of the drawings
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows the schematic diagram according to the utility model acoustical generator specific embodiment；
Fig. 2 shows the schematic diagram according to the utility model sonification system specific embodiment；
Reference：
1st, vibrating diaphragm, 2, voice coil loudspeaker voice coil, the 3, first induction coil, 4, conductive magnetic yoke, 5, magnet, 6, magnetic conductive board, 7, external control circuit,
10th, vibrating diaphragm central part, 11, vibrating diaphragm edge part, 101, body central portion, 102, reinforcement central part.
Embodiment
In order to illustrate more clearly of the utility model, the utility model is done into one with reference to preferred embodiments and drawings
The explanation of step.Similar part is indicated with identical reference in accompanying drawing.It will be appreciated by those skilled in the art that below
Specifically described content is illustrative and be not restrictive, and should not limit the scope of protection of the utility model with this.
The utility model provides a kind of acoustical generator, by setting the first induction coil on acoustical generator vibrating diaphragm, passes through inspection
The first induction coil caused electric current during with diaphragm oscillations is surveyed, the vibration displacement of vibrating diaphragm can be obtained in real time, exactly, just
It is controlled in diaphragm oscillations, avoids vibrating diaphragm damage failure conditions caused by diaphragm oscillations exception, while according to vibrating diaphragm
Actual vibration situation also can Reasonable Regulation And Control acoustical generator input power or voltage, give full play to vibrating diaphragm performance, it is possible to increase sounding
Device quality, reliability and service life.
Fig. 1 shows the schematic diagram according to the utility model acoustical generator specific embodiment, and in the present embodiment, acoustical generator includes outer
Shell and vibrational system and magnetic circuit system in the shell.The magnetic circuit system includes conductive magnetic yoke 4, is fixed on conductive magnetic yoke 4
The magnet 5 at center and the magnetic conductive board 6 positioned at the upper surface of magnet 5.The conductive magnetic yoke 4 includes flat bottom wall and along bottom wall side
The side wall that edge extends towards vibrational system.Formed between the side wall and magnet 5 and magnetic conductive board 6 of conductive magnetic yoke 4 between the magnetic for accommodating voice coil loudspeaker voice coil 2
Gap.In actual applications, in order to increase the magnetic field intensity of magnetic circuit system formation, magnetic circuit system can be also used in conductive magnetic yoke 4
The heart sets magnet 5 and magnetic conductive board 6 to form center magnetic path, and multiple side magnet 5 are set at the edge of conductive magnetic yoke 4, and in side magnet 5
Upper surface sets side magnetic conductive board 6, forms side magnetic circuit, so as to form the magnetic gap for accommodating voice coil loudspeaker voice coil 2 between center magnetic path and side magnetic circuit.
Conductive magnetic yoke 4 is generally rectangular, when magnet 5 may be provided at the four of conductive magnetic yoke 4, can also be positioned only at relative two of conductive magnetic yoke 4
Long side or short side, the edge of conductive magnetic yoke 4 for being not provided with side magnet 5 extend vertically to form side wall relative to conductive magnetic yoke 4, side magnetic circuit and side
Wall forms magnetic gap with center magnetic path jointly.
The vibrational system includes vibrating diaphragm 1 and is fixed on the voice coil loudspeaker voice coil 2 of the lower section of vibrating diaphragm 1, and voice coil loudspeaker voice coil 2 is suspended in magnetic circuit system
Magnetic gap in, voice coil loudspeaker voice coil 2 draw two voice coil leads, can be electrically connected with external control circuit.External control circuit is defeated by electric energy
Enter voice coil loudspeaker voice coil 2, voice coil loudspeaker voice coil 2 drives the vibration sounding of vibrating diaphragm 1 under magnetic circuit system effect.
The center of vibrating diaphragm 1 is provided with the first induction coil 3 for being used for electrically connecting with external control circuit, first sensing
Coil 3 produces electric current in the vibration processes of vibrating diaphragm 1 and to outside control circuit output electric current.Wherein, be fixed on vibrating diaphragm 1
In the vibration processes of vibrating diaphragm 1 as vibrating diaphragm 1 vibrates, the first induction coil 3 cuts magnetic circuit system in vibration and produced one induction coil 3
Magnetic field magnetic induction line, changed by the magnetic flux of the first induction coil 3, induced-current produced in the first induction coil 3.
First induction coil 3 can be electrically connected with external control circuit, be controlled so as to which the first induction coil 3 exports electric current to outside
Circuit processed.Caused electric current on the first induction coil 3 can be analyzed by external control circuit, according to the size of electric current and
The information analyses such as direction obtain the vibration characteristics of corresponding vibrating diaphragm 1, such as amplitude, frequency, obtain the actual vibration displacement of vibrating diaphragm.
When the obtained actual vibration displacement of vibrating diaphragm 1 of detection is excessive, it is likely to result in vibrating diaphragm 1 and damages, fails, can drop accordingly
The voltage or power of low input acoustical generator voice coil loudspeaker voice coil 2, are protected to vibrating diaphragm 1；When the obtained actual vibration displacement of vibrating diaphragm 1 of detection also
During with the space that can be improved, the voltage or power of rise input acoustical generator voice coil loudspeaker voice coil 2 that can be suitably, make the Oscillation Amplitude of vibrating diaphragm 1
Increase in the scope of safety, improve the availability of the performance of acoustical generator vibrating diaphragm 1, improve the volume and tonequality of acoustical generator.
In the present embodiment, vibrating diaphragm 1 include the center of vibrating diaphragm 1 vibrating diaphragm central part 10 and with the edge of vibrating diaphragm central part 10
The vibrating diaphragm edge part 11 of connection.First induction coil 3 can be fixed on the surface of vibrating diaphragm central part 10.In order to increase vibrating diaphragm 1
Vibration characteristics, usual vibrating diaphragm central part 10 include body central portion 101 and are incorporated in the reinforcement on the surface of body central portion 101
Central part 102.In order to mitigate the weight of vibrating diaphragm 1, the vibration performance of vibrating diaphragm 1 is further improved, the center in body central portion 101 can be engraved
It is empty.Wherein, the hollow out edge in body central portion 101 need to be located at the inner side at the edge of reinforcement central part 102 of fixation in connection, protect
Fretwork area is demonstrate,proved less than the area with its reinforcement central part 102 being bonded, to ensure the air-tightness of vibrating diaphragm 1.
First induction coil 3 can be fixed on a side surface of the on-fixed reinforcement central part 102 of body central portion 101
On, when 101 hollow out of body central portion, the size of first induction coil 3 need to be set, its outer ledge is engraved positioned at described
The outside at empty edge, the first induction coil 3 can be fixed in the body central portion 101 of central hollow out.First sensing
Coil 3 could be secured to the outer surface of the reinforcement central part 102, or can also be fixed on the reinforcement central part 102 and institute
State the side of the combination of body central portion 101.In the present embodiment, vibrating diaphragm central part 10 is by body central portion 101 and reinforcement central part
102 compositions, the first induction coil 3 are fixed on the side surface that reinforcement central part 102 is combined with body central portion 101, and this sets
Putting method can also make the first induction coil 3 preferably insulate, so as to reduce the grade part of voice coil loudspeaker voice coil 2 to being produced on the first induction coil 3
Electric current influence, improve the accuracy of vibrating diaphragm 1 vibration displacement detection.For the ease of implementing, the size of the first induction coil 3 is excellent
Selection of land is not more than the size of reinforcement central part 102.In the present embodiment, reinforcement central part 102 is plane, according to acoustical generator type
The other structures such as difference, reinforcement central part 102 or spherical.Generation induced electricity is act as due to the first induction coil
Stream, the first induction coil 3 can use small coil.Therefore, can be combined in reinforcement central part 102 with body central portion 101
A side surface on be further provided with the concave part for accommodating the first induction coil 3, the first induction coil 3 can first be fixed on described
On concave part again with 101 fixation joined integrally of body central portion.The upper surface of first induction coil 3 is preferably no more than reinforcement center
The upper surface in portion 102, the setting of the first induction coil 3 can be made not increase the thickness of vibrating diaphragm 1, the height of vibrational system is reduced, have
Beneficial to the lightening design of acoustical generator.The upper surface of first induction coil 3 and the upper surface of reinforcement central part 102 in the present embodiment
Flush.
First induction coil 3 is electrically connected by the two lines circle lead of extraction with external control circuit, by caused by
Electricity is streamed to external control circuit.The electrical connector electrically connected with external control circuit can be set on shell.It is described to be electrically connected
Fitting can electrically connect with first induction coil 3 and external control circuit respectively, so as to turn on first induction coil 3
With external control circuit.
The mode that first induction coil 3 electrically connects with external control circuit can also use the side of the opened hole on shell
Formula, the two lines circle lead of first induction coil 3 can be extended to outside acoustical generator by the through hole, directly and acoustical generator
Outer control circuit electrical connection.
First induction coil 3 and external control circuit electrically connect can also on acoustical generator corresponding first induction coil 3
One the second induction coil that can be electrically connected with external control circuit is set, and at work, the first induction coil 3 is with vibrating diaphragm 1
Cutting magnetic induction line produces the electric current of change when vibration displacement changes, and the electric current of change produces the magnetic field of change, the be correspondingly arranged
Two induction coils can produce with changing in the first induction coil 3 accordingly after experiencing the magnetic field of change in the second induction coil
Trend identical electric current, the second induction coil electrically connect with external control circuit, can be defeated by the electric current for characterizing the vibration displacement of vibrating diaphragm 1
Go out, so that external control circuit is analyzed and adjusted to the Vibration Condition of vibrating diaphragm 1.Preferably, second induction coil can be set
Put described in face on the inner surface of the acoustical generator shell of the first induction coil 3.Second induction coil can be by being arranged at
The electrical connector electrically connected with external control circuit or the through hole opened up on acoustical generator housing and outside control on acoustical generator
Circuit turn-on.By setting the second induction coil, the electric current that the vibration displacement of vibrating diaphragm 1 is characterized caused by the first induction coil 3 is become
Change trend is corresponding to be exported, and the first induction coil 3 need not draw coil lead and be electrically connected with external control circuit, so as to avoid sending out
Sound device interior cabling takes space in acoustical generator, has saved space in acoustical generator, has been easy to the design of each part in acoustical generator, while
Avoid coil lead and pull influence to vibrational system vibration performance.The electrical connector can preferably use FPCB plates.When
So, in actual applications, the electrical connection of first induction coil 3 and external control circuit is also not necessarily limited to above-mentioned several ways.
As shown in Fig. 2 the present embodiment also includes a kind of sonification system, the sonification system includes the sounding described in the present embodiment
Device and external control circuit 7.The external control circuit 7 can be analyzed the electric current from first induction coil 3, obtained
To the vibration displacement of vibrating diaphragm 1, the electric energy of input acoustical generator is adjusted according to the Vibration Condition of vibrating diaphragm 1, so as to protect the premise of vibrating diaphragm 1
Under, the performance of vibrating diaphragm 1 is given full play to, improves the tonequality of acoustical generator.The external control circuit 7 can use intelligent power amplifier
(Smart PA)。
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model, for those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms, all embodiments can not be exhaustive here,
It is every to belong to obvious changes or variations that the technical solution of the utility model is extended out still in of the present utility model
The row of protection domain.
Claims (10)
1. a kind of acoustical generator, including shell and vibrational system and magnetic circuit system in the shell, the vibrational system bag
Include vibrating diaphragm and the voice coil loudspeaker voice coil being fixed on below the vibrating diaphragm, it is characterised in that
The vibrating diaphragm is provided with the first induction coil of electrical connection external control circuit, and first induction coil is in diaphragm oscillations mistake
Electric current is produced in journey and to outside control circuit output electric current.
2. a kind of acoustical generator according to claim 1, it is characterised in that the vibrating diaphragm includes the vibrating diaphragm positioned at vibrating diaphragm center
Central part and the vibrating diaphragm edge part being connected with the vibrating diaphragm central part edge；
First induction coil is fixed on the vibrating diaphragm central part.
3. a kind of acoustical generator according to claim 2, it is characterised in that the vibrating diaphragm vibrating diaphragm central part includes body central
Portion and the reinforcement central part for being incorporated in body central portion surface,
First induction coil is fixed on a side surface of reinforcement central part described in body central portion on-fixed,
Or the surface in the remote body central portion of the reinforcement central part is fixed on,
Or it is fixed on the side that the reinforcement central part is combined with the body central portion.
4. a kind of acoustical generator according to claim 3, it is characterised in that the reinforcement central part, which is provided with, accommodates described the
The concave part of one induction coil.
5. a kind of acoustical generator according to claim 1, it is characterised in that the shell, which is provided with, to be used to electrically connect outside control
The electrical connector of circuit processed, first induction coil are drawn two lines circle lead and electrically connected with the electrical connector.
6. a kind of acoustical generator according to claim 1, it is characterised in that the shell is provided with and first line of induction
It is used for the second induction coil for electrically connecting external control circuit corresponding to circle.
7. a kind of acoustical generator according to claim 6, it is characterised in that the shell, which is provided with, to be used to electrically connect outside control
The electrical connector of circuit processed, second induction coil electrically connect with electrical connector.
8. a kind of acoustical generator according to claim 5 or 7, it is characterised in that the electrical connector is FPCB plates.
9. a kind of sonification system, it is characterised in that the sonification system is included as described in claim 1-8 any claims
Acoustical generator and external control circuit；
The external control circuit is used for based on the output current signal from first induction coil, controls the defeated of acoustical generator
Enter electric energy.
10. a kind of sonification system according to claim 9, it is characterised in that the external control devices is intelligent power
Amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720790751.7U CN206851025U (en) | 2017-07-03 | 2017-07-03 | Acoustical generator and the sonification system including the acoustical generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720790751.7U CN206851025U (en) | 2017-07-03 | 2017-07-03 | Acoustical generator and the sonification system including the acoustical generator |
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| Publication Number | Publication Date |
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| CN206851025U true CN206851025U (en) | 2018-01-05 |
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ID=60804121
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| CN201720790751.7U Active CN206851025U (en) | 2017-07-03 | 2017-07-03 | Acoustical generator and the sonification system including the acoustical generator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108419186A (en) * | 2018-04-20 | 2018-08-17 | 歌尔股份有限公司 | Electroacoustic transducer and voice coil vibrations displacement control method |
| CN111869232A (en) * | 2018-03-08 | 2020-10-30 | 三星电子株式会社 | Energy limiter for loudspeaker protection |
| CN112188367A (en) * | 2019-07-04 | 2021-01-05 | 华为技术有限公司 | Loudspeaker assembly method and system |
| WO2021012226A1 (en) * | 2019-07-22 | 2021-01-28 | 瑞声声学科技(深圳)有限公司 | Sound generating device |
-
2017
- 2017-07-03 CN CN201720790751.7U patent/CN206851025U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111869232A (en) * | 2018-03-08 | 2020-10-30 | 三星电子株式会社 | Energy limiter for loudspeaker protection |
| CN111869232B (en) * | 2018-03-08 | 2022-01-21 | 三星电子株式会社 | Method for loudspeaker protection, system for limiting loudspeaker energy and loudspeaker |
| CN108419186A (en) * | 2018-04-20 | 2018-08-17 | 歌尔股份有限公司 | Electroacoustic transducer and voice coil vibrations displacement control method |
| WO2019200715A1 (en) * | 2018-04-20 | 2019-10-24 | 歌尔股份有限公司 | Electroacoustic transducer and method for controlling vibration displacement of voice coil |
| CN108419186B (en) * | 2018-04-20 | 2019-12-06 | 歌尔股份有限公司 | electroacoustic transducer and voice coil vibration displacement control method |
| CN112188367A (en) * | 2019-07-04 | 2021-01-05 | 华为技术有限公司 | Loudspeaker assembly method and system |
| CN112188367B (en) * | 2019-07-04 | 2021-10-22 | 荣耀终端有限公司 | Loudspeaker assembly method and system |
| WO2021012226A1 (en) * | 2019-07-22 | 2021-01-28 | 瑞声声学科技(深圳)有限公司 | Sound generating device |
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