CN107809707A - Electroacoustic component and mobile terminal - Google Patents
Electroacoustic component and mobile terminal Download PDFInfo
- Publication number
- CN107809707A CN107809707A CN201711240638.2A CN201711240638A CN107809707A CN 107809707 A CN107809707 A CN 107809707A CN 201711240638 A CN201711240638 A CN 201711240638A CN 107809707 A CN107809707 A CN 107809707A
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- China
- Prior art keywords
- inner frame
- actuator
- electroacoustic component
- magnet
- leak
- Prior art date
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Classifications
-
- 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
Abstract
The invention discloses a kind of electroacoustic component, including：Circuit board, provided with accepting groove；Loudspeaker monomer, the loudspeaker monomer is contained in the accepting groove, and the loudspeaker monomer includes inner frame and vibrating diaphragm, and the periphery of the vibrating diaphragm is fixedly connected on the inner frame, sounding chamber is formed between the inner frame and the vibrating diaphragm, the sounding chamber is used for sounding；Cover plate, it is covered on the opening of the accepting groove, the inwall of the accepting groove includes bottom wall and side wall, the cover plate the bottom wall upright projection between the side wall and the inner frame, sound chamber after being formed between the cover plate, the inner frame, the bottom wall and the side wall, the inner frame are provided with leak and connect the sounding chamber and the rear sound chamber.The present invention also disclosed a kind of mobile terminal.The integral thickness of electroacoustic component is reduced, and does not influence the effect of electroacoustic component sounding, is advantageous to the lightening design of product, optimizes Consumer's Experience.
Description
Technical field
The present invention relates to technical field of electronic equipment, more particularly, to a kind of electroacoustic component and mobile terminal.
Background technology
As the application of mobile terminal product is more and more extensive, user increasingly favors lightening mobile terminal design,
Electroacoustic component is as the indispensable part of mobile terminal, the thickness requirement of electroacoustic component also more and more higher.Moving-coil type at present
Electroacoustic component will leak out hole and all design in the bottom of electroacoustic component, electroacoustic component includes interconnected sounding chamber and rear sound
Chamber, the thickness of sounding chamber, the thickness of rear sound chamber and the connected mode of sounding chamber and rear sound chamber all directly affect electroacoustic component
Thickness.
In the prior art, electroacoustic component has independent box body structure to form sound chamber, and electroacoustic assembling components are provided with drive
On the circuit board of dynamic circuit, the thickness of circuit board increases the space that electroacoustic component integrally takes in a thickness direction, causes electricity
The thickness of sound component is big, is unfavorable for the lightening design of product, influences Consumer's Experience.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of electroacoustic component and mobile terminal, to solve in the prior art
The thickness of electroacoustic component is big, the problem of influenceing Consumer's Experience.
In order to solve the above technical problems, the present invention provides a kind of electroacoustic component, including：
Circuit board, provided with accepting groove；
Loudspeaker monomer, the loudspeaker monomer are contained in the accepting groove, and the loudspeaker monomer includes inner frame
And vibrating diaphragm, the periphery of the vibrating diaphragm are fixedly connected on the inner frame, and sounding is formed between the inner frame and the vibrating diaphragm
Chamber, the sounding chamber are used for sounding；
Cover plate, is covered on the opening of the accepting groove, and the inwall of the accepting groove includes bottom wall and side wall, the cover plate
The bottom wall upright projection between the side wall and the inner frame, the cover plate, the inner frame, the bottom wall
And sound chamber after being formed between the side wall, the inner frame are provided with leak and connect the sounding chamber and the rear sound chamber.
In a kind of embodiment, the inner frame is fixed on the bottom wall.
In a kind of embodiment, the inner frame includes the first surface away from the bottom wall, the first surface and institute
The top surface for stating cover plate flushes.
In a kind of embodiment, the loudspeaker monomer also includes the first actuator and the second actuator, and described first drives
Moving part and second actuator are contained in the sounding intracavitary, and first actuator is fixed on the bottom wall or the inside casing
On frame, second actuator is fixed on the vibrating diaphragm, and second actuator is used for relatively described first actuator vibration, with
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 wall, between first magnet and second magnet, second actuator is electrically connected second actuator
The circuit board is connected to, the circuit board is provided with drive circuit and is used to drive second actuator to vibrate.
In a kind of embodiment, upright projection of first magnet on the inner frame staggers with the leak.
In a kind of embodiment, the leak includes the first leak and the second leak, the first leakage hole position
In first magnet between the upright projection of the inner frame and the vibrating diaphragm, second leak is located at described first
Magnet is between the upright projection of the inner frame and the bottom wall.
In a kind of embodiment, the electroacoustic component also includes sound absorption particle, the particles filled sound after described of sound absorption
Intracavitary.
In a kind of embodiment, the electroacoustic component also includes screen cloth, and the screen cloth is located at the rear sound intracavitary, the sieve
Net is fixed on the inner frame, and the screen cloth covers the leak.
The present invention also provides a kind of mobile terminal, including the electroacoustic component described in any of the above one.
Beneficial effects of the present invention are as follows：Loudspeaker monomer is contained in the accepting groove of circuit board, reduces loudspeaker list
On the one hand the integral thickness size of body and circuit board, circuit board are provided with drive circuit and occurred for drive the speaker monomer, a side
A part of the face itself as audio cavity structure after being formed, circuit board eliminate the structures such as the bottom plate for surrounding rear sound chamber, reduce electricity
The integral thickness of sound component, and the effect of electroacoustic component sounding is not influenceed, be advantageous to the lightening design of product, optimize user's body
Test.
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 the required accompanying drawing used 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, on the premise of not paying creative work, can be with
Other obvious modes of texturing are obtained according to these accompanying drawings.
Fig. 1 is the structural representation 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 structural representation for the electroacoustic component that the embodiment of the present invention two provides.
Fig. 6 is the schematic diagram of the loudspeaker monomer for the electroacoustic component that the embodiment of the present invention two provides.
Fig. 7 is the schematic diagram of the rear sound chamber for the electroacoustic component that the embodiment of the present invention two provides.
Fig. 8 is the structural representation of mobile terminal provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme 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, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong 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 the He of circuit board 10
Loudspeaker monomer 20.Specifically, circuit board 10 is printed circuit board (PCB) (Printed Circuit Board, PCB), one kind is implemented
In mode, circuit board 10 can also be flexible PCB (Flexible Printed Circuit, FPC), be set on circuit board 10
There is drive circuit, the drive circuit is used for the sounding of drive the speaker monomer 20.In a kind of embodiment, when electroacoustic component 100 should
During in mobile terminal 200, circuit board 10 can be the mainboard of mobile terminal 200.In the present embodiment, specific to Fig. 2, circuit
Plate 10 is provided with accepting groove 12, specifically, accepting groove 12 is the groove for being opened in the surface of circuit board 10, in a kind of embodiment, receives
The depth of tank 12 is suitable with the thickness of loudspeaker monomer 20, so that loudspeaker monomer 20 can be contained in accepting groove 12, when
So, in other embodiment, the depth of accepting groove 12 might be less that the thickness of loudspeaker monomer 20, so that loudspeaker monomer 20
It is partially housed in accepting groove 12.In the present embodiment, accepting groove 12 includes bottom wall 102 and side wall 104, wherein, bottom wall 102 is receipts
The maximum plane of the groove bottom of tank 12, the i.e. groove depth of accepting groove 12, the week that side wall 104 is open for connection bottom wall 102 with accepting groove 12
Face.
Specific to Fig. 2, loudspeaker monomer 20 is contained in accepting groove 12, and loudspeaker monomer 20 includes inner frame 22 and vibrating diaphragm
24, the periphery of vibrating diaphragm 24 is fixedly connected on inner frame 22, and sounding chamber 1000, sounding chamber are formed between inner frame 22 and vibrating diaphragm 24
1000 are used for sounding.In a kind of embodiment, inner frame 22 is fixed on bottom wall 102.Specifically, inner frame 22 passes through welding etc.
Mode is fixed on bottom wall 102, and inner frame 22 has certain intensity, and inner frame 22 can be plastic parts or metal
Part.Inner frame 22 surround the figure for forming a closing in the upright projection of bottom wall 102, it is understood that is the ring of inner frame 22
Around hollow cylinder, one end nailed circuit plate 10 (bottom wall 102) of cylinder is formed, the other end is fixedly connected with vibrating diaphragm 24, changed
Yan Zhi, the both ends open of cylinder (inner frame 22) are sealed up by circuit board 10 and vibrating diaphragm 24 respectively, so as in the hollow inside of cylinder
Form sounding chamber 1000.In the present embodiment, loudspeaker monomer 20 also includes actuator, and actuator is contained in sounding chamber 1000,
Drive circuit on circuit board 10 can control actuator to move, and so as to cause vibrating diaphragm 24 to vibrate, that is, send sound, vibrating diaphragm 24 shakes
The dynamic air vibration caused around vibrating diaphragm 24, so that sound is outwards propagated.Further, according to the drive circuit of circuit board 10
Change the factors such as frequency, the amplitude of the vibration of vibrating diaphragm 24, loudspeaker monomer 20 is sent different sound.
With reference to Fig. 1 and Fig. 3, electroacoustic component 100 also includes cover plate 32, and cover plate 32 is covered on the opening of accepting groove 12, receives
The inwall of tank 12 includes bottom wall 102 and side wall 104, and cover plate 32 is located at side wall 104 and inner frame in the upright projection of bottom wall 102
Between 22, sound chamber 2000 after being formed between cover plate 32, inner frame 22, bottom wall 102 and side wall 104, inner frame 22 is provided with leak
40 connection sounding chambers 1000 and rear sound chamber 2000.Specific to Fig. 3, gap between inner frame 22 and side wall 104 be present, cover plate 32 covers
The opening in accepting groove 12 is closed, and the gap between inner frame 22 and side wall 104 is blocked, in other words, cover plate 32, inner frame
22nd, bottom wall 102, side wall 104 are sequentially connected, so as to the sound chamber 2000 after being formed.In a kind of embodiment, cover plate 32 is ring
Shape, it is corresponding with the annular gap between side wall 104 and inner frame 22.In the present embodiment, vibrating diaphragm 24 is resisted against the interior of cover plate 32
Ring, the distance of side wall 104 to inner frame 22 is more than bottom wall 102 to the distance of cover plate 32, so that rear sound chamber 2000 is formed at and raised
The side of sound device monomer 20, reduce the thickness of electroacoustic component 100, beneficial to the lightening design of mobile terminal 200.
Referring to Fig. 1, in the present embodiment, loudspeaker monomer 20 sends sound wave for vibration, so as to form sound, loudspeaker
The vibration of monomer 20 causes the vibration of air or gas in sounding chamber 1000, and loudspeaker monomer 20 is placed in accepting groove 12, raised
Sound chamber 2000 after being formed between sound device monomer 20 and side wall 104, the interior filling sound absorption particle 74 of rear sound chamber 2000, leak 40 cause
Sound chamber 2000 connects with the sounding chamber 1000 inside loudspeaker monomer 20 afterwards, and screen cloth 50 is in rear sound chamber 2000, to prevent to inhale
Sound particle 74 enters leak 40, upright projection covering leak 40 of the screen cloth 50 on loudspeaker monomer 20, the chi of screen cloth 50
The very little size more than leak 40.Leak 40 connects sounding chamber 1000 and rear sound chamber 2000, when loudspeaker monomer 20 works, hair
Gas in the operatic tunes 1000 is compressed or stretched by vibration；During compressed gas, gas is entered by leak 40 from sounding chamber 1000
Enter rear sound chamber 2000, and cause the sound absorption particle 74 in rear sound chamber 2000 to vibrate, the friction consumption sound wave between the particle 74 that absorbs sound
Energy, change the vibrating effect of gas, change the characteristic of sound wave；When stretching gas, gas is by leak 40 from rear sound chamber
2000 enter sounding chambers 1000, and influence the characteristic for the sound wave that vibrating diaphragm 24 is outwards propagated, and send so as to optimizing electroacoustic component 100
The acoustical quality of sound.
Loudspeaker monomer 20 is contained in the accepting groove 12 of circuit board 10, reduces loudspeaker monomer 20 and circuit board 10
Integral thickness size, the one side of circuit board 10 occur provided with drive circuit for drive the speaker monomer 20, and on the one hand itself makees
For a part for the structure of sound chamber 2000 after formation, circuit board 10 eliminates the structures such as the bottom plate for surrounding rear sound chamber 2000, reduced
The integral thickness of electroacoustic component 100, and the effect of the sounding of electroacoustic component 100 is not influenceed, be advantageous to the lightening design of product, it is excellent
Change Consumer's Experience.
Referring to Fig. 1, in the present embodiment, inner frame 22 includes the first surface 221 away from bottom wall 102, first surface 221
Flushed with the top surface of cover plate 32.Specifically, first surface 221 is top of the inner frame 22 on the thickness direction of loudspeaker monomer 20
Face.Loudspeaker monomer 20 is all contained in accepting groove 12, and the thickness of loudspeaker monomer 20 merges with the thickness of circuit board 10, by
It is less than the thickness sum of circuit board 10 and loudspeaker in the thickness of circuit board 10, greatly reduces the thickness gauge of electroacoustic component 100
It is very little.
Fig. 1 and Fig. 2 are referred to, actuator includes the first actuator 262 and the second actuator 264, and the first actuator 262 is solid
Due on bottom wall 102 or inner frame 22, the second actuator 264 is fixed on vibrating diaphragm 24, and the second actuator 264 is used for relative first and driven
Moving part 262 vibrates, to drive the vibration sounding of vibrating diaphragm 24.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 wall
102 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 moves with respect to the second actuator 264, the opposing circuit board 10 of vibrating diaphragm 24 and inner frame 22 vibrate, i.e. the sounding of vibrating diaphragm 24.
Circuit board 10 is fixedly connected with inner frame 22, and circuit board 10 itself forms a part for loudspeaker monomer 20, is applied not only to electrically
Driving, also save the structure integral thickness of loudspeaker monomer 20.
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 wall 102, the second actuator 264 is between the first magnet 262a and the second magnet 262b, the second actuator 264
Circuit board 10 is electrically connected to, circuit board 10 is provided with drive circuit and is used to drive the second actuator 264 to vibrate.Specifically, the first magnetic
Body 262a and the second magnet 262b is permanent magnet, and stabilization, magnetic field side are formed between the first magnet 262a and the second magnet 262b
To constant magnetic field, 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 first magnet 262a inner side, spacing be present 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
Second magnet 262b magnetic force size changes according to the size of current two for flowing through the first magnet 262a and the second magnet 262b, so as to
Magnetic direction and size by changing the first magnet 262a and the second magnet 262b make coil or relative first driving of vibrating diaphragm 24
Part 262 vibrates.
Refer to Fig. 1 and Fig. 2, in a kind of embodiment, vibrating diaphragm 24 is provided 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..
Refer to Fig. 1 and Fig. 3, in the present embodiment, upright projections and leak of the first magnet 262a on inner frame 22
40 stagger.In a kind of embodiment, leak 40 can be circular hole or square opening etc..Leak 40 is opened in inside casing
On frame 22, in other words, the space before and after connection leak 40 is not take up the thickness of electroacoustic component 100, and remains able to make hair
The operatic tunes 1000 connects with rear sound chamber 2000, and the first magnet 262a is fixed on inner frame 22 and staggered with leak 40, does not block
The flow path of gas, be advantageous to the lightening design of product, improve Consumer's Experience.
Referring to Fig. 1, in the present embodiment, electroacoustic component 100 also includes sound absorption particle 74, and sound absorption particle 74 is filled in rear sound
In chamber 2000.Electroacoustic component 100 also includes screen cloth 50, and for screen cloth 50 in rear sound chamber 2000, screen cloth 50 is fixed on inner frame 22
On, and screen cloth 50 covers leak 40.In a kind of embodiment, screen cloth 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 screen cloth 50
40, the particle 74 that avoids absorbing sound avoids influenceing the sounding of loudspeaker monomer 20 into sounding chamber 1000.Screen cloth 50 covers leak 40,
Sound absorption particle 74 is filled up completely with 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 both improved the tonequality of electroacoustic component 100, reduces the production cost of electroacoustic component 100 again.
Referring to Fig. 4, in a kind of embodiment, support rod 400 is provided with leak 40, screen cloth 50 is bonded support rod 400,
Support rod 400 is used to reinforce screen cloth 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 relative both sides of screen cloth 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 screen cloth 50, cause screen cloth 50 to be come off from outside wall surface 220 if extruding force crosses conference, support rod 400 is from screen cloth
The 50 lateral screen clothes 50 for deviating from sound absorption particle 74 provide support force, avoid the deformation of screen cloth 50 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.
Loudspeaker monomer 20 is contained in the accepting groove 12 of circuit board 10, reduces loudspeaker monomer 20 and circuit board 10
Integral thickness size, the one side of circuit board 10 occur provided with drive circuit for drive the speaker monomer 20, and on the one hand itself makees
For a part for the structure of sound chamber 2000 after formation, circuit board 10 eliminates the structures such as the bottom plate for surrounding rear sound chamber 2000, reduced
The integral thickness of electroacoustic component 100, and the effect of the sounding of electroacoustic component 100 is not influenceed, be advantageous to the lightening design of product, it is excellent
Change Consumer's Experience.
Also referring to Fig. 5, Fig. 6 and Fig. 7, the electroacoustic component 100 that the embodiment of the present invention two provides and the area of embodiment one
It is not, leak 40 includes the first leak 42 and the second leak 44, and the first leak 42 is located at the first magnet 262a and existed
Between the upright projection and vibrating diaphragm 24 of inner frame 22, the second leak 44 is located at vertical throwings of the first magnet 262a in inner frame 22
Between shadow and bottom wall 102.Two leaks 40 can increase the gas exchange rate between sounding chamber 1000 and rear sound chamber 2000,
So as to lift acoustical quality, further, the first leak 42 and being used cooperatively for the second leak 44 can be from sounding chambers
1000 diverse location connection sounding chamber 1000 and rear sound chamber 2000, compared to only from a position connection sounding chamber 1000 with after
Sound chamber 2000, it is more beneficial for the gas exchanges of sounding chamber 1000 and rear sound chamber 2000.
Include the first side wall 2622 in face of vibrating diaphragm 24, the inwall of the first leak 42 specific to Fig. 7, the first magnet 262a
Concordant with the first side wall 2622, so as to maximize the size of the first leak 42, the first leak 42 is located at vibrating diaphragm 24 and first
Magnet 262a is between the upright projection of inner frame 22, on the premise of the intensity of inner frame 22 is not influenceed, the leakage of increase first
The size in hole 42 is advantageous to increase the amount of sound chamber 2000 and sounding chamber 1000 after unit interval gas passes in and out, i.e. sound after gas disengaging
The speed of chamber 2000 and sounding chamber 1000, so as to which sound chamber 2000 lifts effect to the tonequality of electroacoustic component 100 after strengthening.
Please continue to refer to Fig. 7, in the present embodiment, the first magnet 262a also includes the second sidewall 2624 in face of bottom wall 102,
The inwall of second leak 44 is concordant with second sidewall 2624, so as to maximize the size of the second leak 44, the second leak
44 between the first magnet 262a and bottom wall 102, on the premise of the intensity of inner frame 22 is not influenceed, increases the second leak
44 size is advantageous to increase the amount of sound chamber 2000 and sounding chamber 1000 after unit interval gas passes in and out, i.e. sound chamber after gas disengaging
2000 with the speed of sounding chamber 1000, so as to which sound chamber 2000 lifts effect to the tonequality of electroacoustic component 100 after strengthening.
Further, the inwall of the second leak 44 is concordant with bottom wall 102, so as to maximize the chi of the second leak 44
Very little, the second leak 44 is between the first actuator 262 and bottom wall 102, on the premise of the intensity of inner frame 22 is not influenceed,
The size for increasing the second leak 44 is advantageous to increase the amount of sound chamber 2000 and sounding chamber 1000 after unit interval gas passes in and out, i.e.,
The speed of sound chamber 2000 and sounding chamber 1000 after gas disengaging, so as to which sound chamber 2000 carries to the tonequality of electroacoustic component 100 after strengthening
Ascending effect.
Loudspeaker monomer 20 is contained in the accepting groove 12 of circuit board 10, reduces loudspeaker monomer 20 and circuit board 10
Integral thickness size, the one side of circuit board 10 occur provided with drive circuit for drive the speaker monomer 20, and on the one hand itself makees
For a part for the structure of sound chamber 2000 after formation, circuit board 10 eliminates the structures such as the bottom plate for surrounding rear sound chamber 2000, reduced
The integral thickness of electroacoustic component 100, and the effect of the sounding of electroacoustic component 100 is not influenceed, be advantageous to the lightening design of product, it is excellent
Change Consumer's Experience.
Referring to Fig. 8, the embodiment of the present invention also provides a kind of mobile terminal 200, including electricity provided in an embodiment of the present invention
Sound component 100.Specifically, mobile terminal 200 also includes housing 92, electroacoustic component 100 is fixed on the bottom of housing 92.It can manage
Solution, mobile terminal 200 can be mobile phone, tablet personal computer, notebook computer etc..
Loudspeaker monomer 20 is contained in the accepting groove 12 of circuit board 10, reduces loudspeaker monomer 20 and circuit board 10
Integral thickness size, the one side of circuit board 10 occur provided with drive circuit for drive the speaker monomer 20, and on the one hand itself makees
For a part for the structure of sound chamber 2000 after formation, circuit board 10 eliminates the structures such as the bottom plate for surrounding rear sound chamber 2000, reduced
The integral thickness of electroacoustic component 100, and the effect of the sounding of electroacoustic component 100 is not influenceed, be advantageous to the lightening design of product, it is excellent
Change Consumer's Experience.
The above disclosed power for being only several preferred embodiments of the present invention, the present invention can not 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 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：Circuit board, provided with accepting groove；Loudspeaker monomer, the loudspeaker monomer are contained in the accepting groove, and the loudspeaker monomer includes inner frame and shaken Film, the periphery of the vibrating diaphragm are fixedly connected on the inner frame, and sounding chamber, institute are formed between the inner frame and the vibrating diaphragm State sounding chamber and be used for sounding；Cover plate, the opening of the accepting groove is covered on, the inwall of the accepting groove includes bottom wall and side wall, and the cover plate is in institute The upright projection of bottom wall is stated between the side wall and the inner frame, the cover plate, the inner frame, the bottom wall and institute State sound chamber after being formed between side wall, the inner frame be provided with leak connect the sounding chamber with it is described after sound chamber.
- 2. electroacoustic component according to claim 1, it is characterised in that the inner frame is fixed on the bottom wall.
- 3. electroacoustic component according to claim 2, it is characterised in that the inner frame includes first away from the bottom wall Surface, the first surface flush with the top surface of the cover plate.
- 4. electroacoustic component according to claim 3, it is characterised in that the loudspeaker monomer also include the first actuator with Second actuator, first actuator and second actuator are contained in the sounding intracavitary, and first actuator is consolidated Due on the bottom wall 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.
- 5. electroacoustic component according to claim 4, 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 wall, and second actuator is located at first magnet and second magnet Between, second actuator is electrically connected to the circuit board, and the circuit board is provided with drive circuit and is used to drive described second Actuator vibrates.
- 6. electroacoustic component according to claim 5, it is characterised in that first magnet is vertical on the inner frame Projection is staggered with the leak.
- 7. electroacoustic component according to claim 6, it is characterised in that the leak is let out including the first leak with second Small opening, first leak is located at first magnet between the upright projection of the inner frame and the vibrating diaphragm, described Second leak is located at first magnet between the upright projection of the inner frame and the bottom wall.
- 8. electroacoustic component according to claim 1, it is characterised in that the electroacoustic component also includes sound absorption particle, described Absorb sound the particles filled sound intracavitary after described.
- 9. electroacoustic component according to claim 8, it is characterised in that the electroacoustic component also includes screen cloth, the screen cloth Located at the rear sound intracavitary, the screen cloth is fixed on the inner frame, and the screen cloth covers the leak.
- 10. a kind of mobile terminal, it is characterised in that including the electroacoustic component described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711240638.2A CN107809707B (en) | 2017-11-30 | 2017-11-30 | Electroacoustic component and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711240638.2A CN107809707B (en) | 2017-11-30 | 2017-11-30 | Electroacoustic component and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107809707A true CN107809707A (en) | 2018-03-16 |
| CN107809707B CN107809707B (en) | 2020-03-03 |
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ID=61590871
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711240638.2A Active CN107809707B (en) | 2017-11-30 | 2017-11-30 | Electroacoustic component and mobile terminal |
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| CN (1) | CN107809707B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112788166A (en) * | 2021-01-06 | 2021-05-11 | Oppo广东移动通信有限公司 | Electronic device |
| WO2021098624A1 (en) * | 2019-11-22 | 2021-05-27 | 歌尔股份有限公司 | Loudspeaker module and electronic device |
| CN113992774A (en) * | 2021-11-18 | 2022-01-28 | Oppo广东移动通信有限公司 | Mobile terminal |
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| CN107809707B (en) | 2020-03-03 |
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