CN107809708A - Electroacoustic component, electroacoustic device and mobile terminal - Google Patents
Electroacoustic component, electroacoustic device and mobile terminal Download PDFInfo
- Publication number
- CN107809708A CN107809708A CN201711244141.8A CN201711244141A CN107809708A CN 107809708 A CN107809708 A CN 107809708A CN 201711244141 A CN201711244141 A CN 201711244141A CN 107809708 A CN107809708 A CN 107809708A
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- China
- Prior art keywords
- actuator
- inner frame
- magnet
- leak
- vibrating diaphragm
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Abstract
The invention discloses a kind of electroacoustic component, it is fixed on circuit board, including：Loudspeaker monomer, including bottom plate, inner frame and vibrating diaphragm, the inner frame is fixed on the bottom plate, and the bottom plate is used to be fixedly connected with the circuit board, the periphery of the vibrating diaphragm is fixedly connected on the inner frame, and sounding chamber is formed between the inner frame and the vibrating diaphragm；Outer framework, positioned at the week side of boss of the loudspeaker monomer, the outer framework includes roof sheet, Outer Bottom Plating and the outer panel being connected between the roof sheet and the Outer Bottom Plating, the roof sheet abuts the vibrating diaphragm, sound chamber after being formed between the roof sheet, the outer panel, the Outer Bottom Plating and the inner frame, the inner frame be provided with leak be used to connecting it is described after sound chamber and the sounding chamber, the vertical range of the Outer Bottom Plating and the roof sheet is less than the vertical range of the vibrating diaphragm and the bottom plate.The present invention also disclosed a kind of electroacoustic device and mobile terminal.Optimize the acoustical quality of electroacoustic component.
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 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, 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 influenceing Consumer's Experience.
In order to solve the above technical problems, the present invention provides a kind of electroacoustic component, it is fixed on circuit board, the electroacoustic component
Including：
Loudspeaker monomer, including bottom plate, inner frame and vibrating diaphragm, the inner frame are fixed on the bottom plate, the bottom plate
For being fixedly connected with the circuit board, the periphery of the vibrating diaphragm is fixedly connected on the inner frame, the inner frame with it is described
Sounding chamber is formed between vibrating diaphragm；
Outer framework, positioned at the week side of boss of the loudspeaker monomer, the outer framework includes roof sheet, Outer Bottom Plating and is connected to institute
The outer panel between roof sheet and the Outer Bottom Plating is stated, the roof sheet abuts the vibrating diaphragm, the roof sheet, the outside
Between plate, the Outer Bottom Plating and the inner frame formed after sound chamber, the inner frame be provided with leak be used for connect it is described after
Sound chamber and the sounding chamber, the Outer Bottom Plating are vertical with the bottom plate less than the vibrating diaphragm with the vertical range of the roof sheet
Distance.
In a kind of embodiment, the leak be located at the roof sheet the inner frame upright projection with it is described outer
Between bottom plate.
In a kind of embodiment, the loudspeaker monomer also includes actuator, and the actuator is contained in the sounding chamber
Interior, the actuator includes the first actuator and the second actuator, and first actuator is fixed on the bottom plate or described interior
On framework, second actuator is fixed on the vibrating diaphragm, and second actuator is used for relatively described first actuator vibration,
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
Drive circuit is connected to, the drive circuit is used to drive second actuator to vibrate.
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 Outer Bottom Plating.
In a kind of embodiment, first magnet includes the first side wall in face of the vibrating diaphragm, first leak
Inwall it is concordant with the first side wall；First magnet also includes the second sidewall in face of the bottom plate, and described second lets out
The inwall of small opening is concordant with the second sidewall.
In a kind of embodiment, the electroacoustic component also includes sound absorption particle, the particles filled sound after described of sound absorption
Intracavitary.
The present invention also provides a kind of electroacoustic device, including circuit board and the electroacoustic component described in any of the above one, described
Bottom plate is fixedly connected with the circuit board, and the circuit board is provided with drive circuit and is used to drive the diaphragm oscillations sounding.
In a kind of embodiment, the circuit board includes first surface, and the circuit board sinks into first table provided with interior
The accepting groove in face, the loudspeaker monomer are at least partially housed in the accepting groove, and the Outer Bottom Plating contacts first table
Face.
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：Sounding chamber is connected with rear sound chamber by leak, the sound absorption particle of rear sound intracavitary
Between friction consumption sound wave energy, change the vibrating effect of gas, change the characteristic of sound wave, optimization electroacoustic component is sent
The acoustical quality of sound, improve Consumer's Experience；The bottom plate of loudspeaker monomer protrudes from the Outer Bottom Plating of outer framework, and bottom plate is used to connect
Circuit board, gap between Outer Bottom Plating and circuit board be present, on the one hand, the gap can be used for placing other electronic devices, improve
Space availability ratio, arranged beneficial to mobile terminal internal components, on the other hand, when circuit board is flexible PCB, the gap carries
Bend beneficial to flexible PCB for space, arranged beneficial to mobile terminal internal components.
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 a kind of schematic diagram of embodiment of electroacoustic device provided in an embodiment of the present invention.
Fig. 9 is the schematic diagram of the another embodiment of electroacoustic device provided in an embodiment of the present invention.
Figure 10 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 loudspeaker monomer
20 and outer framework 32.In the present embodiment, loudspeaker monomer 20 includes inner frame 22, bottom plate 28 and vibrating diaphragm 24, and inner frame 22 is fixed
In on bottom plate 28, the periphery of vibrating diaphragm 24 is fixedly connected on inner frame 22, and hair is formed between bottom plate 28, inner frame 22 and vibrating diaphragm 24
The operatic tunes 100, sounding chamber 100 is interior to be provided with actuator, and actuator is used to drive vibrating diaphragm 24 to vibrate.Specific to Fig. 2, inner frame 22 passes through
The modes such as welding are fixed on bottom plate 28, and inner frame 22 has certain intensity, inner frame 22 can be plastic parts or
Metalwork.Inner frame 22 surround the figure for forming a closing in the upright projection of bottom plate 28, it is understood that is inner frame 22
Around hollow cylinder is formed, one end of cylinder is fixedly connected with bottom plate 28, and the other end is fixedly connected with vibrating diaphragm 24, in other words, cylinder
The both ends open of (inner frame 22) is sealed up by vibrating diaphragm 24 and bottom plate 28 respectively, so as to form a box body.In the present embodiment, vibrating diaphragm
24 are fixed on by modes such as paste adhesives on the inwall of inner frame 22, and vibrating diaphragm 24 is stretched flattening by inner frame 22.This reality
Apply in example, bottom plate 28 is used for nailed circuit plate 10, so as to which loudspeaker monomer 20 is fixed on circuit board 10.One kind is implemented
In mode, bottom plate 28 is fixed on by way of welding on circuit board 10, and in other embodiment, bottom plate 28 can also be by viscous
It is gluing to be affixed on circuit board 10.
Please continue to refer to Fig. 2, actuator is contained in sounding chamber 100, and actuator moves under the control of drive circuit, from
And cause vibrating diaphragm 24 to vibrate, that is, sound is sent, vibrating diaphragm 24 vibrates the air vibration caused around vibrating diaphragm 24, so that sound is outside
Propagate.Further, change the factors such as frequency, the amplitude of the vibration of vibrating diaphragm 24 according to drive circuit, send loudspeaker monomer 20
Different sound.
Refer to Fig. 1 and Fig. 3, in the present embodiment, outer framework 32 is located at the week side of boss of loudspeaker monomer 20, outer framework 32 and interior
Sound chamber 200 after being formed between framework 22, inner frame 22 are provided with leak 40, leak 40 be located at vibrating diaphragm 24 and bottom plate 28 it
Between, sound chamber 200 and sounding chamber 100 after leak 40 connects.Specific to Fig. 3, outer framework 32 includes roof sheet 322, Outer Bottom Plating 326
And outer panel 324, roof sheet 322 abut with vibrating diaphragm 24, and roof sheet 322 flushes with vibrating diaphragm 24, and outer panel 324 is connected to outer
Between top plate 322 and Outer Bottom Plating 326, sound chamber after being formed between inner frame 22, roof sheet 322, outer panel 324 and Outer Bottom Plating 326
200, the distance of outer panel 324 to inner frame 22 is more than Outer Bottom Plating 326 to the distance of roof sheet 322, so that the rear shape of sound chamber 200
Into in the side of loudspeaker monomer 20, the thickness of reduction electroacoustic component 100, beneficial to the lightening design of mobile terminal 300.
In a kind of embodiment, leak 40 is circular hole or bar hole.In the present embodiment, Outer Bottom Plating 326 it is vertical with roof sheet 322 away from
From the vertical range less than vibrating diaphragm 24 and bottom plate 28.Specifically, loudspeaker monomer 20 forms a knot protruded from Outer Bottom Plating 326
Structure, i.e. bottom plate 28 protrude from Outer Bottom Plating 326, form the structure of similar boss.Bottom plate 28 is used to connect circuit board 10, Outer Bottom Plating
Gap be present between 326 and circuit board 10, on the one hand, the gap can be used for placing other electronic devices, improve space utilization
Rate, arranged beneficial to the internal components of mobile terminal 300, on the other hand, when circuit board 10 is flexible PCB 10, the gap provides
Space is bent beneficial to flexible PCB 10, is arranged beneficial to the internal components of mobile terminal 300.
Specific to Fig. 1, loudspeaker monomer 20 sends sound wave for vibration, and so as to form sound, loudspeaker monomer 20 shakes
The dynamic vibration for causing air or gas in sounding chamber 100, loudspeaker monomer 20 are placed in outer framework 32, loudspeaker monomer 20 with
Sound chamber 200 after being formed between outer framework 32, the interior filling sound absorption particle 74 of rear sound chamber 200, sound chamber 200 is with raising after leak 40 causes
Sounding chamber 100 inside sound device monomer 20 connects, and screen cloth 50 is in rear sound chamber 200, to prevent sound absorption particle 74 from entering leakage
Hole 40, upright projection covering leak 40 of the screen cloth 50 on loudspeaker monomer 20, the size of screen cloth 50 are more than leak 40
Size.Leak 40 connects sounding chamber 100 and rear sound chamber 200, when loudspeaker monomer 20 works, the gas quilt in sounding chamber 100
Vibrate and compress or stretch；During compressed gas, gas enters rear sound chamber 200 by leak 40 from sounding chamber 100, and after causing
Sound absorption particle 74 in sound chamber 200 vibrates, the energy of the friction consumption sound wave between the particle 74 that absorbs sound, and changes the vibration effect of gas
Fruit, change the characteristic of sound wave；When stretching gas, gas enters sounding chamber 100 by leak 40 from rear sound chamber 200, and influences
The characteristic for the sound wave that vibrating diaphragm 24 is outwards propagated, so as to optimize the acoustical quality for the sound that electroacoustic component 100 is sent.
Sounding chamber 100 is connected with rear sound chamber 200 by leak 40, rubbing between the sound absorption particle 74 in rear sound chamber 200
The energy of consumption sound wave is wiped, changes the vibrating effect of gas, changes the characteristic of sound wave, the sound that optimization electroacoustic component 100 is sent
Acoustical quality, improve Consumer's Experience；The bottom plate 28 of loudspeaker monomer 20 protrudes from the Outer Bottom Plating 326 of outer framework 32, bottom plate 28
For connecting circuit board 10, gap be present between Outer Bottom Plating 326 and circuit board 10, on the one hand, the gap can be used for placing it
His electronic device, space availability ratio is improved, arranged beneficial to the internal components of mobile terminal 300, on the other hand, when circuit board 10 is soft
Property circuit board 10 when, the gap provide space bent beneficial to flexible PCB 10, beneficial to the internal components of mobile terminal 300 arrangement.
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 plate 28 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 actuator 264 will be in circuits
Relative motion under the driving of drive circuit on plate 10, the first actuator 262 are fixed by the mode such as welding or fastener connection
In on bottom plate 28 or inner frame 22, the second actuator 264 is fixedly connected with vibrating diaphragm 24 by the mode such as welding or fastener connection, the
When one actuator, 262 relative second actuator 264 moves, the opposed bottom 28 of vibrating diaphragm 24 and inner frame 22 are vibrated, i.e., vibrating diaphragm 24 is sent out
Sound.
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 2222, the second magnet
262b is fixed on bottom plate 28, and the second actuator 264 is between the first magnet 262a and the second magnet 262b, the second actuator
264 are electrically connected on circuit board 10, and circuit board 10 is provided 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, formed between the first magnet 262a and the second magnet 262b it is stable,
The constant magnetic field of magnetic direction, in the magnetic field that coil is formed between the first magnet 262a and the second magnet 262b, work as circuit
Current signal from the drive circuit of plate 10 to coil exporting change when, the electric current of change makes coil receive power in magnetic field in coil
Effect so that coil drive vibrating diaphragm 24 together vibrate.In the present embodiment, the first magnet 262a is fixed on inner frame 22,
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, with
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 second magnet 262b magnetic force size become according to the size of current two for flowing through the first magnet 262a and the second magnet 262b
Change, so as to make coil or vibrating diaphragm 24 with respect to the by changing the first magnet 262a and the second magnet 262b magnetic direction and size
One actuator 262 vibrates.
Referring to Fig. 2, in the present embodiment, leak 40 is located at upright projection and outer bottom of the roof sheet 322 in inner frame 22
Between plate 326.Specifically, leak 40 connects sounding chamber 100 and rear sound chamber 200, in other words, leak 40 is arranged at inner frame
22 part between roof sheet 322 and Outer Bottom Plating 326.In a kind of embodiment, the first magnet 262a is at least partially disposed at
Loudspeaker monomer 20 protrudes the part of Outer Bottom Plating 326, so that leak 40 is arranged at inner frame 22 and is located at roof sheet 322 and outer bottom
Part between plate 326, after guarantee on the premise of the size of sound chamber 200, the thickness of sound chamber 200 changes electroacoustic after can adjusting
The overall thickness of component 100, is advantageous to the lightening design of electroacoustic component 100.
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..
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 200.Electroacoustic component 100 also includes screen cloth 50, and in rear sound chamber 200, screen cloth 50 is fixed on inner frame 22 screen cloth 50,
And screen cloth 50 covers leak 40.In a kind of embodiment, screen cloth 50 is gauze.Inner frame 22 is included in face of rear sound chamber 200
Outside wall surface 220, gauze can be the openings for covering leak 40 in outside wall surface 220.Leak 40 is covered by screen cloth 50, avoided
The particle 74 that absorbs sound enters sounding chamber 100, avoids influenceing the sounding of loudspeaker monomer 20.Screen cloth 50 covers leak 40 so that sound absorption
Particle 74 can be filled up completely with rear sound chamber 200, without being positioned over rear sound again after being first packaged to sound absorption particle 74
In chamber 200, the tonequality of electroacoustic component 100 had both been improved, has reduced 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.
Fig. 5, Fig. 6 and Fig. 7 are referred to, the electroacoustic component 100 that the embodiment of the present invention two provides 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 is located at the first magnet 262a in inside casing
Between the upright projection and vibrating diaphragm 24 of frame 22, the second leak 44 be located at the first magnet 262a inner frame 22 upright projection with
Between Outer Bottom Plating 326.Specific to Fig. 5, the first leak 42 coordinates with the second leak 44, increases sounding chamber 100 and rear sound
The gas exchange rate of chamber 200, be advantageous to improve tone quality improving effect.In the present embodiment, the first magnet 262a is located at inner frame
The part of sound chamber 200 after 22 correspondences, the first leak 42 and the second leak 44 are located at the first magnet 262a both sides respectively, the
One magnet 262a separates the first leak 42 and the second leak 44, enters from diverse location and the rear sound chamber 200 of sounding chamber 100
Row gas exchanges, make the gas exchanges uniform in effect in sounding chamber 100, be advantageous to tone quality improving effect.
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 framework is not influenceed, increases the first leak 42
Size be advantageous to increase the amount of sound chamber 200 and sounding chamber 100 after the disengaging of unit interval gas, i.e. sound chamber 200 after gas disengaging
With the speed of sounding chamber 100, so as to which sound chamber 200 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 plate 28,
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 circuit board 10, on the premise of the intensity of framework is not influenceed, increases the second leak 44
Size be advantageous to increase the amount of sound chamber 200 and sounding chamber 100 after the disengaging of unit interval gas, i.e. sound chamber 200 after gas disengaging
With the speed of sounding chamber 100, so as to which sound chamber 200 lifts effect to the tonequality of electroacoustic component 100 after strengthening.
Sounding chamber 100 is connected with rear sound chamber 200 by leak 40, rubbing between the sound absorption particle 74 in rear sound chamber 200
The energy of consumption sound wave is wiped, changes the vibrating effect of gas, changes the characteristic of sound wave, the sound that optimization electroacoustic component 100 is sent
Acoustical quality, improve Consumer's Experience；The bottom plate 28 of loudspeaker monomer 20 protrudes from the Outer Bottom Plating 326 of outer framework 32, bottom plate 28
For connecting circuit board 10, gap be present between Outer Bottom Plating 326 and circuit board 10, on the one hand, the gap can be used for placing it
His electronic device, space availability ratio is improved, arranged beneficial to the internal components of mobile terminal 300, on the other hand, when circuit board 10 is soft
Property circuit board 10 when, the gap provide space bent beneficial to flexible PCB 10, beneficial to the internal components of mobile terminal 300 arrangement.
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, the bottom plate 28 are fixedly connected with the circuit board 10, and the circuit board 10 is used provided with drive circuit
In the driving vibration sounding of vibrating diaphragm 24.Specifically, circuit board 10 be printed circuit board (PCB) 10 (Printed Circuit Board,
PCB), in a kind of embodiment, circuit board 10 can also be flexible PCB 10 (Flexible Printed Circuit,
FPC), circuit board 10 is provided with drive circuit, and the drive circuit is used for the sounding of drive the speaker monomer 20.A kind of embodiment
In, when electroacoustic component 100 is applied in mobile terminal 300, circuit board 10 can be the mainboard of mobile terminal 300.Outer Bottom Plating
Gap be present between 326 and circuit board 10, on the one hand, the gap can be used for placing other electronic devices, improve space utilization
Rate, arranged beneficial to the internal components of mobile terminal 300, on the other hand, when circuit board 10 is flexible PCB 10, the gap provides
Space is bent beneficial to flexible PCB 10, is arranged beneficial to the internal components of mobile terminal 300.
Referring to Fig. 9, in a kind of embodiment, circuit board 10 includes first surface 104, and circuit board 10, which is provided with, interior sinks into the
The accepting groove 102 on one surface 104, loudspeaker monomer 20 are at least partially housed in accepting groove 102, the contact of Outer Bottom Plating 326 first
Surface 104.In the present embodiment, accepting groove 102 is to be opened in the groove on the surface of circuit board 10, in a kind of embodiment, accepting groove
The size that 102 depth protrudes from Outer Bottom Plating 326 with loudspeaker monomer 20 is identical, and loudspeaker monomer 20 protrudes from Outer Bottom Plating 326
Part be all contained in accepting groove 102, in other words, the gross thickness (electroacoustic device 200 of circuit board 10 and electroacoustic component 100
Thickness) for the thickness sum of circuit board 10 and rear sound chamber 200, reduce the thickness of electroacoustic device 200, be advantageous to electroacoustic device
200 lightening designs.
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 also 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 personal computer, notebook computer etc..
Sounding chamber 100 is connected with rear sound chamber 200 by leak 40, rubbing between the sound absorption particle 74 in rear sound chamber 200
The energy of consumption sound wave is wiped, changes the vibrating effect of gas, changes the characteristic of sound wave, the sound that optimization electroacoustic component 100 is sent
Acoustical quality, improve Consumer's Experience；The bottom plate 28 of loudspeaker monomer 20 protrudes from the Outer Bottom Plating 326 of outer framework 32, bottom plate 28
For connecting circuit board 10, gap be present between Outer Bottom Plating 326 and circuit board 10, on the one hand, the gap can be used for placing it
His electronic device, space availability ratio is improved, arranged beneficial to the internal components of mobile terminal 300, on the other hand, when circuit board 10 is soft
Property circuit board 10 when, the gap provide space bent beneficial to flexible PCB 10, beneficial to the internal components of mobile terminal 300 arrangement.
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)
1. a kind of electroacoustic component, is fixed on circuit board, it is characterised in that the electroacoustic component includes：
Loudspeaker monomer, including bottom plate, inner frame and vibrating diaphragm, the inner frame are fixed on the bottom plate, and the bottom plate is used for
The circuit board is fixedly connected with, the periphery of the vibrating diaphragm is fixedly connected on the inner frame, the inner frame and the vibrating diaphragm
Between formed sounding chamber；
Outer framework, positioned at the week side of boss of the loudspeaker monomer, the outer framework includes roof sheet, Outer Bottom Plating and is connected to described outer
Outer panel between top plate and the Outer Bottom Plating, the roof sheet abut the vibrating diaphragm, the roof sheet, the outer panel, institute
State between Outer Bottom Plating and the inner frame formed after sound chamber, the inner frame be provided with leak be used for connect it is described after sound chamber with
The vertical range of the sounding chamber, the Outer Bottom Plating and the roof sheet is less than the vertical range of the vibrating diaphragm and the bottom plate.
2. electroacoustic component according to claim 1, it is characterised in that the leak is located at the roof sheet described interior
Between the upright projection of framework and the Outer Bottom Plating.
3. electroacoustic component according to claim 2, it is characterised in that the loudspeaker monomer also includes actuator, described
Actuator is contained in the sounding intracavitary, and the actuator includes the first actuator and the second actuator, first actuator
It is fixed on the bottom plate or the inner frame, second actuator is fixed on the vibrating diaphragm, and second actuator is used for
Relatively described first actuator vibration, to drive the diaphragm oscillations sounding.
4. electroacoustic component according to claim 3, 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 drive circuit, and the drive circuit is used to drive second actuator to vibrate.
5. electroacoustic component according to claim 4, 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 Outer Bottom Plating.
6. electroacoustic component according to claim 5, it is characterised in that first magnet includes the in face of the vibrating diaphragm
One side wall, the inwall of first leak are concordant with the first side wall；First magnet also includes facing the bottom plate
Second sidewall, the inwall of second leak is concordant with the second sidewall.
7. 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.
A kind of 8. electroacoustic device, it is characterised in that including the electroacoustic component described in circuit board and claim 1 to 7 any one,
The bottom plate is fixedly connected with the circuit board, and the circuit board is provided with drive circuit and is used to drive the diaphragm oscillations sounding.
9. electroacoustic device according to claim 8, it is characterised in that the circuit board includes first surface, the circuit
Plate is provided with the interior accepting groove for sinking into the first surface, and the loudspeaker monomer is at least partially housed in the accepting groove, institute
State Outer Bottom Plating and contact the first surface.
10. a kind of mobile terminal, it is characterised in that including the electroacoustic device described in claim 7 to 9 any one.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711244141.8A CN107809708B (en) | 2017-11-30 | 2017-11-30 | Electroacoustic component, electroacoustic device and mobile terminal |
| PCT/CN2018/115180 WO2019105220A1 (en) | 2017-11-30 | 2018-11-13 | Electroacoustic assembly, electroacoustic device and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711244141.8A CN107809708B (en) | 2017-11-30 | 2017-11-30 | Electroacoustic component, electroacoustic device and mobile terminal |
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| CN107809708A true CN107809708A (en) | 2018-03-16 |
| CN107809708B CN107809708B (en) | 2020-05-05 |
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| CN201711244141.8A Active CN107809708B (en) | 2017-11-30 | 2017-11-30 | Electroacoustic component, electroacoustic device and mobile terminal |
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| CN (1) | CN107809708B (en) |
| WO (1) | WO2019105220A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019105220A1 (en) * | 2017-11-30 | 2019-06-06 | Oppo广东移动通信有限公司 | Electroacoustic assembly, electroacoustic device and mobile terminal |
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| CN204180268U (en) * | 2014-11-20 | 2015-02-25 | 歌尔声学股份有限公司 | Loud speaker module |
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| CN108900957B (en) * | 2016-05-06 | 2020-05-12 | Oppo广东移动通信有限公司 | Loudspeaker module and mobile terminal |
| CN107809708B (en) * | 2017-11-30 | 2020-05-05 | Oppo广东移动通信有限公司 | Electroacoustic component, electroacoustic device and mobile terminal |
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2017
- 2017-11-30 CN CN201711244141.8A patent/CN107809708B/en active Active
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| JP2005286984A (en) * | 2004-03-30 | 2005-10-13 | Samsung Electro Mech Co Ltd | Speaker for mobile terminal and its manufacturing method |
| CN201966990U (en) * | 2010-12-13 | 2011-09-07 | 瑞声光电科技(常州)有限公司 | Encapsulating structure for loudspeaker |
| CN202799131U (en) * | 2012-08-27 | 2013-03-13 | 瑞声光电科技(常州)有限公司 | Micro loudspeaker |
| CN103841502A (en) * | 2012-11-20 | 2014-06-04 | 清华大学 | Sound-making device |
| CN204180268U (en) * | 2014-11-20 | 2015-02-25 | 歌尔声学股份有限公司 | Loud speaker module |
| CN106851504A (en) * | 2017-03-14 | 2017-06-13 | 广东欧珀移动通信有限公司 | Electroacoustic component, electroacoustic device and mobile terminal |
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| WO2019105220A1 (en) * | 2017-11-30 | 2019-06-06 | Oppo广东移动通信有限公司 | Electroacoustic assembly, electroacoustic device and mobile terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107809708B (en) | 2020-05-05 |
| WO2019105220A1 (en) | 2019-06-06 |
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