CN107948891A - Electroacoustic component, electroacoustic device and mobile terminal - Google Patents
Electroacoustic component, electroacoustic device and mobile terminal Download PDFInfo
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- CN107948891A CN107948891A CN201711320125.2A CN201711320125A CN107948891A CN 107948891 A CN107948891 A CN 107948891A CN 201711320125 A CN201711320125 A CN 201711320125A CN 107948891 A CN107948891 A CN 107948891A
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- actuator
- inner frame
- vibrating diaphragm
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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
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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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The invention discloses a kind of electroacoustic component, including：Loudspeaker monomer, including inner frame, top plate, bottom plate and vibrating diaphragm, the inner frame is fixed between the top plate and the bottom plate, the periphery of the vibrating diaphragm is fixedly connected on the inner frame, sounding chamber is formed between the bottom plate, the inner frame and the vibrating diaphragm, sound chamber before being formed between the top plate, the inner frame and the vibrating diaphragm, the sounding intracavitary are equipped with actuator, and the actuator is used to drive the diaphragm oscillations；Outer framework, positioned at the side of the loudspeaker monomer, sound chamber after being formed between the outer framework and the inner frame, the inner frame goes out acoustic aperture and leak equipped with first, described first goes out acoustic aperture between the vibrating diaphragm and the top plate, for connecting the preceding sound chamber with extraneous, the leak is between the vibrating diaphragm and the bottom plate, for connecting the rear sound chamber and the sounding chamber.The present invention also disclosed a kind of electroacoustic device and mobile terminal.
Description
Technical field
The present invention relates to technical field of electronic equipment, more particularly, to a kind of electroacoustic component, electroacoustic device and mobile terminal.
Background technology
As the application of mobile terminal product is more and more extensive, the function of mobile terminal is also more and more diversified.It is mobile whole
End is no longer only the instrument of call, while is also to play video, the amusement equipment of music, therefore, playing music by mobile terminal
Acoustical quality also strong influence the experience of user.Electroacoustic component is the main devices of mobile terminal playing sound, at present,
DYN dynamic electroacoustic component is to be applied to most common electroacoustic component type on mobile terminal.
In the prior art, in order to meet the lightening design of mobile terminal, the thickness of electroacoustic component is smaller, in electroacoustic component
Portion can not be handled the sound that occurring source is sent, and the tonequality for the sound that electroacoustic component is sent is bad, influences user experience.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of electroacoustic component, electroacoustic device and mobile terminal, to solve
The tonequality for the sound that electroacoustic component is sent is bad in the prior art, the problem of influencing user experience.
In order to solve the above technical problems, the present invention provides a kind of electroacoustic component, including：
Loudspeaker monomer, including inner frame, top plate, bottom plate and vibrating diaphragm, the inner frame be fixed on the top plate with it is described
Between bottom plate, the periphery of the vibrating diaphragm is fixedly connected on the inner frame, the bottom plate, the inner frame and the vibrating diaphragm it
Between formed sounding chamber, between the top plate, the inner frame and the vibrating diaphragm formed before sound chamber, the sounding intracavitary be equipped with driving
Part, the actuator are used to drive the diaphragm oscillations；
Outer framework, positioned at the side of the loudspeaker monomer, sound chamber after being formed between the outer framework and the inner frame,
The inner frame goes out acoustic aperture and leak equipped with first, and described first goes out acoustic aperture between the vibrating diaphragm and the top plate,
For connecting the preceding sound chamber with extraneous, the leak between the vibrating diaphragm and the bottom plate, for connect it is described after
Sound chamber and the sounding chamber.
In a kind of embodiment, the top plate includes the first surface in face of the vibrating diaphragm, and described first goes out the interior of acoustic aperture
Wall is flushed with the first surface.
In a kind of embodiment, the outer framework includes roof sheet, Outer Bottom Plating and outer panel, the roof sheet and the top
Plate abuts, and the Outer Bottom Plating is abutted with the bottom plate, and the outer panel is connected between the roof sheet and the Outer Bottom Plating, institute
State and the rear sound chamber is formed between inner frame, the roof sheet, the outer panel and the Outer Bottom Plating, described first goes out acoustic aperture
Diameter is equal to the vertical range between the top plate and the roof sheet.
In a kind of embodiment, the top plate goes out acoustic aperture equipped with multiple second, and described second, which goes out acoustic aperture, connects the preceding sound
Chamber and the external world.
In a kind of embodiment, the electroacoustic component further includes sound absorption particle, the particles filled sound after described of sound absorption
Intracavitary.
In a kind of embodiment, the electroacoustic component further includes sieve, and the sieve is arranged on the rear sound intracavitary, the sieve
Net is fixed on the inner frame, and the sieve covers the leak.
The present invention also provides a kind of electroacoustic device, including circuit board and the electroacoustic component described in any of the above one, it is described
Circuit board is equipped with container, and the electroacoustic component is contained in the container, and drive circuit, institute are additionally provided with the circuit board
State drive circuit and be electrically connected to the actuator, to drive the loudspeaker monomer sounding.
In a kind of embodiment, the actuator includes the first actuator and the second actuator, and first actuator is consolidated
Due on the bottom plate or the inner frame, second actuator is fixed on the vibrating diaphragm, and second actuator is used for phase
First actuator is vibrated, to drive the diaphragm oscillations sounding.
In a kind of embodiment, first actuator is magnet, and second actuator is coil, first driving
Part includes the first magnet and the second magnet, and first magnet is fixed on the inner frame, and second magnet is fixed on institute
State on bottom plate, between first magnet and second magnet, second actuator is electrically connected second actuator
The drive circuit is connected to, the drive circuit drives the second actuator vibration.
The present invention also provides a kind of mobile terminal, including the electroacoustic device described in any of the above one.
Beneficial effects of the present invention are as follows：During diaphragm oscillations, the gas of sounding intracavitary is compressed or stretched by vibration；Compression
During gas, gas enters rear sound chamber by leak, and causes the sound absorption particle of rear sound intracavitary to vibrate, rubbing between the particle that absorbs sound
The energy of consumption sound wave is wiped, changes the vibrating effect of gas, changes the characteristic of sound wave；When stretching gas, gas passes through leak
Enter sounding chamber from rear sound chamber, and influence the characteristic for the sound wave that vibrating diaphragm is outwards propagated, so as to optimize the sound that electroacoustic component is sent
Acoustical quality, improve user experience, preceding sound chamber be used for protect vibrating diaphragm, avoid vibrating diaphragm from being contacted with the external world, sound wave shakes in preceding sound chamber
Dynamic, preceding sound chamber can also improve the acoustical quality of electroacoustic component sounding.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other obvious modes of texturing are obtained according to these attached drawings.
Fig. 1 is the structure diagram for the electroacoustic component that the embodiment of the present invention one provides.
Fig. 2 is the schematic diagram of the loudspeaker monomer for the electroacoustic component that the embodiment of the present invention one provides.
Fig. 3 is the schematic diagram of the rear sound chamber for the electroacoustic component that the embodiment of the present invention one provides.
Fig. 4 is a kind of enlarged partial sectional schematic diagram of the electroacoustic component of embodiment.
Fig. 5 is the structure diagram of electroacoustic component provided by Embodiment 2 of the present invention.
Fig. 6 is the schematic diagram of the loudspeaker monomer of electroacoustic component provided by Embodiment 2 of the present invention.
Fig. 7 is the schematic diagram of the rear sound chamber of electroacoustic component provided by Embodiment 2 of the present invention.
Fig. 8 is the structure diagram of electroacoustic device provided in an embodiment of the present invention.
Fig. 9 is the structure diagram of mobile terminal provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
Also referring to Fig. 1, Fig. 2 and Fig. 3, the electroacoustic component 100 that the embodiment of the present invention one provides includes loudspeaker monomer
20 and outer framework 32.In the present embodiment, loudspeaker monomer 20 includes inner frame 22, top plate 222, bottom plate 224 and vibrating diaphragm 24, inside casing
Frame 22 is fixed between top plate 222 and bottom plate 224, and the periphery of vibrating diaphragm 24 is fixedly connected on inner frame 22, bottom plate 224, inside casing
Sounding chamber 1000 is formed between frame 22 and vibrating diaphragm 24, sound chamber 3000 before being formed between top plate 222, inner frame 22 and vibrating diaphragm 24, hair
Actuator is equipped with the operatic tunes 1000, actuator is used to drive vibrating diaphragm 24 to vibrate.Specific to Fig. 2, inner frame 22 passes through the side such as welding
Formula is fixed on bottom plate 224 and top plate 222, and inner frame 22 has certain intensity, and inner frame 22 can be plastic parts, can also
It is metalwork.Inner frame 22 surround the figure for forming a closing in the upright projection of bottom plate 224, it is understood that is inside casing
Frame 22 is around hollow cylinder is formed, and one end of cylinder is fixedly connected with bottom plate 224, and the other end is fixedly connected with top plate 222, changes speech
It, the both ends open of cylinder (inner frame 22) is sealed up by top plate 222 and bottom plate 224 respectively, so as to form a box body.This implementation
In example, vibrating diaphragm 24 is fixed on by modes such as paste adhesives on the inner wall of inner frame 22, and inner frame 22 stretches vibrating diaphragm 24
Flattening.Box body is separated into two parts by vibrating diaphragm 24, wherein, sounding chamber 1000, vibrating diaphragm 24 are formed between vibrating diaphragm 24 and bottom plate 224
Sound chamber 3000 before being formed between top plate 222.
Please continue to refer to Fig. 2, actuator is contained in sounding chamber 1000, and actuator moves under the control of drive circuit,
So as to causing vibrating diaphragm 24 to vibrate, that is, make a sound, vibrating diaphragm 24 vibrates the air vibration caused around vibrating diaphragm 24 so that sound to
Outer propagation.Further, change the factors such as frequency, the amplitude of the vibration of vibrating diaphragm 24 according to drive circuit, send out loudspeaker monomer 20
Go out different sound.In the present embodiment, preceding sound chamber 3000 is hollow cavity, and the vibration of vibrating diaphragm 24 can cause preceding sound chamber 3000
Interior Gas Vibration.
Please refer to Fig.1 and Fig. 3, in the present embodiment, outer framework 32 is located at the side of loudspeaker monomer 20, outer framework 32 and interior
Sound chamber 2000 after being formed between frame 22, inner frame 22 go out acoustic aperture 222a equipped with first, and first, which goes out acoustic aperture 222a, is located at vibrating diaphragm
Between 24 and top plate 222, first goes out sound chamber 3000 and the external world before acoustic aperture 222a connections.Specific to Fig. 3, outer framework 32 includes outer top
Plate 322, Outer Bottom Plating 326 and outer panel 324, roof sheet 322 are abutted with top plate 222, and Outer Bottom Plating 326 is abutted with bottom plate 224, or bottom
Plate 224 is fixed on Outer Bottom Plating 326, and outer panel 324 is connected between roof sheet 322 and Outer Bottom Plating 326, inner frame 22, outer top
Sound chamber 2000 after being formed between plate 322, outer panel 324 and Outer Bottom Plating 326, the distance of outer panel 324 to inner frame 22 is more than outer
Bottom plate 326, so that rear sound chamber 2000 is formed at the side of loudspeaker monomer 20, reduces electroacoustic group to the distance of roof sheet 322
The thickness of part 100, beneficial to the lightening design of mobile terminal 300.In the present embodiment, first goes out in acoustic aperture 222a is opened in
The position of sound chamber 3000, i.e., between vibrating diaphragm 24 and top plate 222, preceding sound chamber 3000 is in communication with the outside before frame 22 corresponds to.One
In kind of embodiment, first to go out acoustic aperture 222a be circular hole or bar hole.
Specific to Fig. 1, loudspeaker monomer 20 sends sound wave for vibration, so as to form sound, loudspeaker monomer 20 shakes
The dynamic vibration for causing air or gas in preceding sound chamber 3000, loudspeaker monomer 20 are placed in outer framework 32, loudspeaker monomer 20
Sound chamber 2000 after being formed between outer framework 32, rear sound chamber 2000 is interior to fill sound absorption particle 74, and leakage is additionally provided with inner frame 22
Hole 40, leak 40 is between vibrating diaphragm 24 and bottom plate 224, and leak 40 is so that inside rear sound chamber 2000 and loudspeaker monomer 20
Sounding chamber 1000 connect, sieve 50 is arranged in rear sound chamber 2000, and to prevent sound absorption particle 74 from entering leak 40, sieve 50 exists
Upright projection covering leak 40 on loudspeaker monomer 20, the size of sieve 50 are more than the size of leak 40.Leak 40
Sounding chamber 1000 and rear sound chamber 2000 are connected, when loudspeaker monomer 20 works, the gas in sounding chamber 1000 is compressed by vibration
Or stretching；During compressed gas, gas enters rear sound chamber 2000 by leak 40 from sounding chamber 1000, and causes rear sound chamber 2000
Interior sound absorption particle 74 vibrates, and the energy of the friction consumption sound wave between the particle 74 that absorbs sound, changes the vibrating effect of gas, change
The characteristic of sound wave；When stretching gas, gas enters sounding chamber 1000 by leak 40 from rear sound chamber 2000, and influences vibrating diaphragm 24
The characteristic for the sound wave outwards propagated, so as to optimize the acoustical quality for the sound that electroacoustic component 100 is sent.
Referring to Fig. 2, in the present embodiment, top plate 222 includes the first surface 2220 in face of vibrating diaphragm 24, and first goes out acoustic aperture
The inner wall of 222a is flushed with first surface 2220, so as to maximize the first size for going out acoustic aperture 222a, first goes out acoustic aperture 222a
Between vibrating diaphragm 24 and top plate 222, on the premise of the intensity of inner frame 22 is not influenced, increase first goes out the size of acoustic aperture 222a
Be conducive to increase the amount that unit interval sound wave is spread out of from preceding sound chamber 3000, so as to strengthen the tonequality lifting effect of electroacoustic component 100
And volume.In a kind of embodiment, first go out acoustic aperture 222a diameter be equal between top plate 222 and roof sheet 322 it is vertical away from
From the part between top plate 222 and roof sheet 322 protrudes from the part of outer framework 32 for inner frame 22, and first goes out acoustic aperture 222a
Size it is identical with the size for the part that inner frame 22 protrudes from outer framework 32, that is, maximize the first size for going out acoustic aperture 222a,
Sound chamber 3000 outwardly propagates the effect of sound before raising.
Referring to Fig. 2, in a kind of embodiment, top plate 222 goes out acoustic aperture 222b equipped with multiple second, and second goes out acoustic aperture 222b
Sound chamber 3000 and the external world before connection.Specifically, second goes out acoustic aperture 222b and be uniformly arranged on top plate 222, and run through top plate 222,
Second goes out acoustic aperture 222b by preceding sound chamber 3000 with being connected outside loudspeaker monomer 20, and when 24 vibration sounding of vibrating diaphragm, sound wave can lead to
Cross second and go out acoustic aperture 222b and outwards propagate, to be received by user.
When vibrating diaphragm 24 vibrates, the gas in sounding chamber 1000 is compressed or stretched by vibration；During compressed gas, gas passes through
Leak 40 enters rear sound chamber 2000, and causes the sound absorption particle 74 in rear sound chamber 2000 to vibrate, rubbing between the particle 74 that absorbs sound
The energy of consumption sound wave is wiped, changes the vibrating effect of gas, changes the characteristic of sound wave；When stretching gas, gas passes through leak
40 enter sounding chamber 1000 from rear sound chamber 2000, and influence the characteristic for the sound wave that vibrating diaphragm 24 is outwards propagated, so as to optimize electroacoustic group
The acoustical quality for the sound that part 100 is sent, improve user experience, preceding sound chamber 3000 be used for protect vibrating diaphragm 24, avoid vibrating diaphragm 24 with
External world's contact, sound wave are vibrated in preceding sound chamber 3000, and preceding sound chamber 3000 can also improve the acoustical quality of 100 sounding of electroacoustic component.
Please refer to Fig.1 and Fig. 2, actuator include the first actuator 262 and the second actuator 264, the first actuator 262 is solid
Due on bottom plate 224 or inner frame 22, the second actuator 264 is fixed on vibrating diaphragm 24, and the second actuator 264 is used for opposite first and drives
Moving part 262 vibrates, to drive 24 vibration sounding of vibrating diaphragm.Specifically, the first actuator 262 and the second driving will on the circuit board 10
Drive circuit driving under relative motion, the first actuator 262 by welding or fastener connect etc. mode be fixed on bottom plate
224 or inner frame 22 on, the second actuator 264 mode such as connects by welding or fastener and is fixedly connected with vibrating diaphragm 24, and first drives
When moving part 262 is moved with respect to the second actuator 264,24 opposed bottom 224 of vibrating diaphragm and inner frame 22 vibrate, i.e. 24 sounding of vibrating diaphragm.
Referring to Fig. 2, in the present embodiment, the first actuator 262 is magnet, and the second actuator 264 is coil, and first drives
Part 262 includes the first magnet 262a and the second magnet 262b, and the first magnet 262a is fixed on inner frame 22, the second magnet 262b
It is fixed on bottom plate 224, the second actuator 264 is between the first magnet 262a and the second magnet 262b, the second actuator 264
It is electrically connected on circuit board 10, circuit board 10 is equipped with drive circuit and is used to drive the second actuator 264 to vibrate.Specifically, the
One magnet 262a and the second magnet 262b is permanent magnet, and stabilization, magnetic are formed between the first magnet 262a and the second magnet 262b
The constant magnetic field of field direction, in the magnetic field that coil is formed between the first magnet 262a and the second magnet 262b, works as circuit board
Current signal from 10 drive circuit to coil exporting change when, the electric current of change makes coil receive power in magnetic field in coil
Effect, so that coil drives vibrating diaphragm 24 together to vibrate.In the present embodiment, the first magnet 262a is fixed on inner frame 22, the
Two magnet 262b are located at the inner side of the first magnet 262a, there are spacing between the first magnet 262a and the second magnet 262b, to put
Put coil.In a kind of embodiment, the first magnet 262a and the second magnet 262b can also be electromagnet, i.e. the first magnet 262a
Changed with the magnetic force size of the second magnet 262b according to the size of current two for flowing through the first magnet 262a and the second magnet 262b, from
And drive coil or vibrating diaphragm 24 opposite first by varying the magnetic direction and size of the first magnet 262a and the second magnet 262b
Moving part 262 vibrates.
Please refer to Fig.1 and Fig. 2, in a kind of embodiment, vibrating diaphragm 24 is equipped with fold 72 between periphery and geometric center.Pleat
Circumferentially extending of the wrinkle 72 along vibrating diaphragm 24.Fold 72 reduces the tension force of vibrating diaphragm 24, so that vibrating diaphragm 24 is close to geometric center
Region is more prone to deformation vibration.Fold 72 is fixedly connected with the second actuator 264, facilitates the second actuator 264 to drive vibrating diaphragm
24 produce deformation.The material of vibrating diaphragm 24 can be papery, Fiber Materials, metal material, wool material, silk material etc..
Referring to Fig. 1, in the present embodiment, electroacoustic component 100 further includes sound absorption particle 74, and sound absorption particle 74 is filled in rear sound
In chamber 2000.Electroacoustic component 100 further includes sieve 50, and sieve 50 is arranged in rear sound chamber 2000, and sieve 50 is fixed on inner frame 22
On, and sieve 50 covers leak 40.In a kind of embodiment, sieve 50 is gauze.Inner frame 22 includes facing rear sound chamber
2000 outside wall surface 220, gauze can be the openings for covering leak 40 in outside wall surface 220.Leak is covered by sieve 50
40, avoid sound absorption particle 74 from entering sounding chamber 1000, avoid influencing 20 sounding of loudspeaker monomer.Sieve 50 covers leak 40,
Sound absorption particle 74 is filled up completely in rear sound chamber 2000, without being put again after being first packaged to sound absorption particle 74
It is placed in rear sound chamber 2000, had not only improved the tonequality of electroacoustic component 100, but also reduces the production cost of electroacoustic component 100.
Referring to Fig. 4, in a kind of embodiment, support rod 400 is equipped with leak 40, sieve 50 is bonded support rod 400,
Support rod 400 is used to reinforce sieve 50 and the connection of outside wall surface 220.Specifically, the auxiliary support plansifter of support rod 400 net 50, supporting
Bar 400 is located at the opposite both sides of sieve 50 with sound absorption particle 74 respectively, and sound absorption particle 74 is rocked due to self gravitation or product
Produce to the extruding force of sieve 50, cause sieve 50 to come off from outside wall surface 220 if extruding force crosses conference, support rod 400 is from sieve
The 50 lateral sieves 50 for deviating from sound absorption particle 74 provide support force, avoid 50 deformation of sieve and come off, reduce the dimension of product
The cycle is protected, reduces the maintenance cost of product.In a kind of embodiment, the quantity of support rod 400 is two, and arranged in a crossed manner.
Fig. 5, Fig. 6 and Fig. 7 are referred to, electroacoustic component 100 provided by Embodiment 2 of the present invention and the difference of embodiment one exist
In leak 40 includes the first leak 42 and the second leak 44, and the first leak 42 and the second leak 44 are located at respectively
The both sides of first magnet 262a.First leak 42 and the second leak 44 are used to connect sounding chamber 1000 and rear sound chamber 2000.
Specific to Fig. 7, in the present embodiment, the first leak 42 and the second leak 44 are opened in inner frame 22 and correspond to sounding chamber 1000
Between position, i.e. vibrating diaphragm 24 and bottom plate 224, sounding chamber 1000 is connected with rear sound chamber 2000.In a kind of embodiment, first
42 and second leak 44 of leak is circular hole or bar hole.
In the present embodiment, loudspeaker monomer 20 sends sound wave for vibration, so as to form sound, loudspeaker monomer 20 shakes
The dynamic vibration for causing air or gas in sounding chamber 1000, loudspeaker monomer 20 are placed in outer framework 32, loudspeaker monomer 20
Sound chamber 2000 after being formed between outer framework 32, the interior filling sound absorption particle 74 of rear sound chamber 2000, the first leak 42 and second are let out
For leakage hole 44 so that rear sound chamber 2000 is connected with the sounding chamber 1000 inside loudspeaker monomer 20, sieve 50 is arranged on rear sound chamber 2000
It is interior, to prevent sound absorption particle 74 from entering the first leak 42 and the second leak 44, the hanging down on loudspeaker monomer 20 of sieve 50
Deliver directly shadow the first leak 42 of covering and the second leak 44, the size of sieve 50 are more than the first leak 42 and the second leak
44 size.First leak 42 and the second leak 44 connection sounding chamber 1000 and rear sound chamber 2000,20 work of loudspeaker monomer
When making, the gas in sounding chamber 1000 is compressed or stretched by vibration；During compressed gas, gas passes through the first leak 42 and
Two leaks 44 enter rear sound chamber 2000 from sounding chamber 1000, and cause the sound absorption particle 74 in rear sound chamber 2000 to vibrate, and absorb sound
The energy of friction consumption sound wave between particle 74, changes the vibrating effect of gas, changes the characteristic of sound wave；When stretching gas,
Gas enters sounding chamber 1000 by the first leak 42 and the second leak 44 from rear sound chamber 2000, and it is outside to influence vibrating diaphragm 24
The characteristic of the sound wave of propagation, so as to optimize the acoustical quality for the sound that electroacoustic component 100 is sent.Second leak 44 goes out with first
Acoustic aperture 42 works at the same time, and improves the scavenging efficiency of rear sound chamber 2000, enhances tone quality improving effect.
Referring to Fig. 5, in the present embodiment, sieve 50 is arranged in rear sound chamber 2000, and sieve 50 is fixed on inner frame 22, and
Sieve 50 covers the first leak 42 and the second leak 44.In a kind of embodiment, sieve 50 is gauze.Inner frame 22 includes
In face of the outside wall surface 220 of rear sound chamber 2000, gauze can cover the first leak 42 and the second leak 44 in outside wall surface 220
Opening.First leak 42 and the second leak 44 are covered by sieve 50, avoid sound absorption particle 74 from entering sounding chamber 1000,
Avoid influencing 20 sounding of loudspeaker monomer.Sieve 50 covers the first leak 42 and the second leak 44 so that sound absorption particle 74
It can be filled up completely in rear sound chamber 2000, without being positioned over rear sound chamber 2000 again after being first packaged to sound absorption particle 74
It is interior, the tonequality of electroacoustic component 100 was not only improved, but also reduce the production cost of electroacoustic component 100.
When vibrating diaphragm 24 vibrates, the gas in preceding sound chamber 3000 is compressed or stretched by vibration；During compressed gas, gas passes through
First leak 42 and the second leak 44 enter rear sound chamber 2000, and cause the sound absorption particle 74 in rear sound chamber 2000 to vibrate,
The energy of friction consumption sound wave between sound absorption particle 74, changes the vibrating effect of gas, changes the characteristic of sound wave；Stretch gas
When, gas enters preceding sound chamber 3000 by the first leak 42 and the second leak 44 from rear sound chamber 2000, and influences vibrating diaphragm 24
The characteristic for the sound wave outwards propagated, so as to optimize the acoustical quality for the sound that electroacoustic component 100 is sent, improves user experience.
Referring to Fig. 8, the embodiment of the present invention also provides a kind of electroacoustic device 200, including circuit board 10 and the present invention are implemented
The electroacoustic component 100 that example provides, circuit board 10 are equipped with container 102, and electroacoustic component 100 is contained in container 102, circuit board
Drive circuit is additionally provided with 10, drive circuit is electrically connected to actuator, with 20 sounding of drive the speaker monomer.Specifically, circuit
Plate 10 is printed circuit board (PCB) (Printed CircuitBoard, PCB), and in a kind of embodiment, circuit board 10 can also be soft
Property circuit board (Flexible PrintedCircuit, FPC), circuit board 10 is equipped with drive circuit, which is used to drive
20 sounding of dynamic loudspeaker monomer.In a kind of embodiment, when electroacoustic component 100 is applied in mobile terminal 300, circuit board 10
It can be the mainboard of mobile terminal 300.In the present embodiment, container 102 is to be opened in the groove on 10 surface of circuit board, Yi Zhongshi
Apply in mode, the depth of container 102 is suitable with the thickness of loudspeaker monomer 20, so that loudspeaker monomer 20 can be contained in receipts
In tank 102, certainly, in other embodiment, the depth of container 102 might be less that the thickness of loudspeaker monomer 20, with
Loudspeaker monomer 20 is set to be partially housed in container 102.Specifically, structure of the circuit board 10 as carrying drive circuit, with
Electroacoustic component 100 merges, and reduces the overall thickness of electroacoustic device 200.In a kind of embodiment, bottom plate 224, Outer Bottom Plating 326
Can be a part for circuit board 10, circuit board 10 is applied not only to carrying drive circuit, also serves as one of electroacoustic component 100
Divide, reduce the integral thickness of electroacoustic device 200.
With reference to Fig. 1, actuator includes the first actuator 262 and the second actuator 264, and the first actuator 262 is fixed on bottom
On plate 224 or inner frame 22, the second actuator 264 is fixed on vibrating diaphragm 24, and the second actuator 264 is used for opposite first actuator
262 vibrations, to drive 24 vibration sounding of vibrating diaphragm.Specifically, the first actuator 262 and second is driven drive on the circuit board 10
Relative motion under the driving of dynamic circuit, the first actuator 262 by welding or fastener connect etc. mode be fixed on bottom plate 224 or
On inner frame 22, the second actuator 264 is fixedly connected with vibrating diaphragm 24, the first actuator by the mode such as welding or fastener connection
When 262 opposite second actuators 264 move, 24 opposed bottom 224 of vibrating diaphragm and inner frame 22 vibrate, i.e. 24 sounding of vibrating diaphragm.
With reference to Fig. 2, in the present embodiment, the first actuator 262 is magnet, and the second actuator 264 is coil, the first actuator
262 include the first magnet 262a and the second magnet 262b, and the first magnet 262a is fixed on inner frame 22, and the second magnet 262b consolidates
Due on bottom plate 224, the second actuator 264 is between the first magnet 262a and the second magnet 262b, the electricity of the second actuator 264
It is connected on circuit board 10, circuit board 10 is equipped with drive circuit and is used to drive the second actuator 264 to vibrate.Specifically, first
Magnet 262a and the second magnet 262b is permanent magnet, and stabilization, magnetic field are formed between the first magnet 262a and the second magnet 262b
The constant magnetic field in direction, in the magnetic field that coil is formed between the first magnet 262a and the second magnet 262b, when circuit board 10
Current signal from drive circuit to coil exporting change when, the electric current of change makes coil receive the work of power in magnetic field in coil
With so that coil drives vibrating diaphragm 24 together to vibrate.In the present embodiment, the first magnet 262a is fixed on inner frame 22, and second
Magnet 262b is located at the inner side of the first magnet 262a, there are spacing between the first magnet 262a and the second magnet 262b, to place
Coil.In a kind of embodiment, the first magnet 262a and the second magnet 262b can also be electromagnet, i.e. the first magnet 262a and
The magnetic force size of second magnet 262b changes according to the size of current two for flowing through the first magnet 262a and the second magnet 262b, so that
Make coil or opposite first driving of vibrating diaphragm 24 by varying the magnetic direction and size of the first magnet 262a and the second magnet 262b
Part 262 vibrates.
Referring to Fig. 9, the embodiment of the present invention also provides a kind of mobile terminal 300, including electricity provided in an embodiment of the present invention
Acoustic device 200.Specifically, mobile terminal 300 further includes housing 92, electroacoustic device 200 is fixed on the bottom of housing 92.It can manage
Solution, mobile terminal 300 can be mobile phone, tablet computer, laptop etc..
When vibrating diaphragm 24 vibrates, the gas in sounding chamber 1000 is compressed or stretched by vibration；During compressed gas, gas passes through
Leak 40 enters rear sound chamber 2000, and causes the sound absorption particle 74 in rear sound chamber 2000 to vibrate, rubbing between the particle 74 that absorbs sound
The energy of consumption sound wave is wiped, changes the vibrating effect of gas, changes the characteristic of sound wave；When stretching gas, gas passes through leak
40 enter sounding chamber 1000 from rear sound chamber 2000, and influence the characteristic for the sound wave that vibrating diaphragm 24 is outwards propagated, so as to optimize electroacoustic group
The acoustical quality for the sound that part 100 is sent, improve user experience, preceding sound chamber 3000 be used for protect vibrating diaphragm 24, avoid vibrating diaphragm 24 with
External world's contact, sound wave are vibrated in preceding sound chamber 3000, and preceding sound chamber 3000 can also improve the acoustical quality of 100 sounding of electroacoustic component.
The above disclosed power for being only several preferred embodiments of the present invention, the present invention cannot being limited with this certainly
Sharp scope, one of ordinary skill in the art will appreciate that realizing all or part of flow of above-described embodiment, and is weighed according to the present invention
Profit requires made equivalent variations, still falls within and invents covered scope.
Claims (10)
- A kind of 1. electroacoustic component, it is characterised in that including：Loudspeaker monomer, including inner frame, top plate, bottom plate and vibrating diaphragm, the inner frame are fixed on the top plate and the bottom plate Between, the periphery of the vibrating diaphragm is fixedly connected on the inner frame, shape between the bottom plate, the inner frame and the vibrating diaphragm Into sounding chamber, sound chamber before being formed between the top plate, the inner frame and the vibrating diaphragm, the sounding intracavitary is equipped with actuator, The actuator is used to drive the diaphragm oscillations；Outer framework, positioned at the side of the loudspeaker monomer, sound chamber after being formed between the outer framework and the inner frame is described Inner frame goes out acoustic aperture and leak equipped with first, and described first goes out acoustic aperture between the vibrating diaphragm and the top plate, is used for The preceding sound chamber is connected with extraneous, the leak is between the vibrating diaphragm and the bottom plate, for connecting the rear sound chamber With the sounding chamber.
- 2. electroacoustic component according to claim 1, it is characterised in that the top plate includes the first table in face of the vibrating diaphragm Face, the described first inner wall for going out acoustic aperture are flushed with the first surface.
- 3. electroacoustic component according to claim 2, it is characterised in that the outer framework includes roof sheet, Outer Bottom Plating and outer Side plate, the roof sheet are abutted with the top plate, and the Outer Bottom Plating is abutted with the bottom plate, and the outer panel is connected to described outer Described in being formed between top plate and the Outer Bottom Plating, between the inner frame, the roof sheet, the outer panel and the Outer Bottom Plating Sound chamber afterwards, the described first diameter for going out acoustic aperture are equal to the vertical range between the top plate and the roof sheet.
- 4. electroacoustic component according to claim 3, it is characterised in that the top plate goes out acoustic aperture equipped with multiple second, described Second, which goes out acoustic aperture, connects the preceding sound chamber and the external world.
- 5. electroacoustic component according to claim 1, it is characterised in that the electroacoustic component further includes sound absorption particle, described Absorb sound the particles filled sound intracavitary after described.
- 6. electroacoustic component according to claim 5, it is characterised in that the electroacoustic component further includes sieve, the sieve Arranged on the rear sound intracavitary, the sieve is fixed on the inner frame, and the sieve covers the leak.
- A kind of 7. electroacoustic device, it is characterised in that including the electroacoustic component described in circuit board and claim 1 to 6 any one, The circuit board is equipped with container, and the electroacoustic component is contained in the container, and driving electricity is additionally provided with the circuit board Road, the drive circuit are electrically connected to the actuator, to drive the loudspeaker monomer sounding.
- 8. electroacoustic device according to claim 7, it is characterised in that the actuator includes the first actuator and second and drives Moving part, first actuator are fixed on the bottom plate or the inner frame, and second actuator is fixed on the vibrating diaphragm, Second actuator is used for relatively described first actuator vibration, to drive the diaphragm oscillations sounding.
- 9. electroacoustic device according to claim 8, it is characterised in that first actuator is magnet, and described second drives Moving part is coil, and first actuator includes the first magnet and the second magnet, and first magnet is fixed on the inner frame On, second magnet is fixed on the bottom plate, and second actuator is located at first magnet and second magnet Between, second actuator is electrically connected to the drive circuit, and the drive circuit drives the second actuator vibration.
- 10. a kind of mobile terminal, it is characterised in that including the electroacoustic device described in claim 7 to 9 any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711320125.2A CN107948891A (en) | 2017-12-12 | 2017-12-12 | Electroacoustic component, electroacoustic device and mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711320125.2A CN107948891A (en) | 2017-12-12 | 2017-12-12 | Electroacoustic component, electroacoustic device and mobile terminal |
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| CN107948891A true CN107948891A (en) | 2018-04-20 |
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| CN201711320125.2A Pending CN107948891A (en) | 2017-12-12 | 2017-12-12 | Electroacoustic component, electroacoustic device and mobile terminal |
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| WO2019205721A1 (en) * | 2018-04-24 | 2019-10-31 | 歌尔股份有限公司 | Sound emission device and electronic apparatus |
| WO2020034728A1 (en) * | 2018-08-13 | 2020-02-20 | 歌尔股份有限公司 | Terminal apparatus |
| CN110958507A (en) * | 2019-11-22 | 2020-04-03 | 歌尔股份有限公司 | Speaker module and electronic equipment |
| WO2023088070A1 (en) * | 2021-11-16 | 2023-05-25 | 天津大觥科技有限公司 | Sound production unit and sound device |
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| CN110958507B (en) * | 2019-11-22 | 2021-05-28 | 歌尔股份有限公司 | Speaker module and electronic equipment |
| WO2023088070A1 (en) * | 2021-11-16 | 2023-05-25 | 天津大觥科技有限公司 | Sound production unit and sound device |
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