CN207399498U - Electroacoustic device and mobile terminal - Google Patents

Abstract

The utility model discloses a kind of electroacoustic device and mobile terminals, the electroacoustic device includes box body, frame, vibrating diaphragm, drive component and sound-absorbing material, the box body has sound chamber, the frame is fixed on the sound intracavitary, the side of the frame is equipped with the leak holes for penetrating through the sound chamber, the vibrating diaphragm is fixed on the frame, the driving component is contained in the frame, drive the diaphragm oscillations, the sound-absorbing material is contained in the sound intracavitary and outside the frame, to absorb the sound wave sent via the leak holes outside the frame.Sound-absorbing material can be distributed in the side of frame, and sound-absorbing material is avoided to be stacked in the frame, so as to reduce the electroacoustic device thickness, improve user experience.

Description

Electroacoustic device and mobile terminal

Technical field

The utility model is related to electronic device field more particularly to a kind of electroacoustic devices and mobile terminal.

Background technology

The electroacoustic component of mobile phone is equipped with through hole in vibrating diaphragm relative position at present, and opposite with vibrating diaphragm on the outside of electroacoustic component Direction on stack sound-absorbing structure, sound-absorbing structure via through holes absorb the acoustic wave segment that vibrating diaphragm is sent, to promote the sound of electroacoustic component Matter.However, under such structure, electroacoustic component is stacked with sound-absorbing structure, causes the integral thickness of mobile phone to increase, and reduces user's body It tests.

Utility model content

The purpose of this utility model is to provide a kind of electroacoustic devices and mobile terminal for improving user experience.

In order to solve the above-mentioned technical problem, the utility model provides a kind of electroacoustic device, wherein, the electroacoustic device bag Box body, frame, vibrating diaphragm, drive component and sound-absorbing material are included, the box body has sound chamber, and the frame is fixed on the sound chamber Interior, the side of the frame is equipped with the leak holes for penetrating through the sound chamber, and the vibrating diaphragm is fixed on the frame, the driving component It is contained in the frame, drives the diaphragm oscillations, the sound-absorbing material is contained in the sound intracavitary and positioned at the frame Outside, to absorb the sound wave sent via the leak holes outside the frame.

The utility model also provides a kind of mobile terminal, wherein, the mobile terminal includes above-mentioned electroacoustic device.

Electroacoustic device and mobile terminal provided by the utility model set leak holes by the side of the frame, described Leak holes discharge the host cavity inside points sound wave to outside electroacoustic component so that the in vivo sound-absorbing material of box is in the frame Side absorbs acoustic wave segment through the leak holes, i.e. sound-absorbing material can be distributed in the side of frame, sound-absorbing material is avoided to stack In the frame, so as to reduce the electroacoustic device thickness, user experience is improved.

Description of the drawings

In order to illustrate more clearly of the technical solution of the utility model embodiment, will make below to required in embodiment Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the utility model, for For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings Attached drawing.

Fig. 1 is the schematic cross-section for the electroacoustic component that the utility model embodiment provides；

Fig. 2 is another schematic cross-section for the electroacoustic component that the utility model embodiment provides；

Fig. 3 is the schematic cross-section for the electroacoustic component that another embodiment of the utility model provides；

Fig. 4 is another schematic cross-section for the electroacoustic component that the utility model embodiment provides；

Fig. 5 is another schematic cross-section for the electroacoustic component that the utility model embodiment provides；

Fig. 6 is another schematic cross-section for the electroacoustic component that the utility model embodiment provides；

Fig. 7 is the schematic cross-section for the electroacoustic component that another embodiment of the utility model provides；

Fig. 8 is the schematic cross-section for the electroacoustic component that another embodiment of the utility model provides；

Fig. 9 is the schematic cross-section for the electroacoustic component that another embodiment of the utility model provides；

Figure 10 is the schematic cross-section for the electroacoustic device that the utility model embodiment provides；

Figure 11 is the schematic cross-section for the electroacoustic device that another embodiment of the utility model provides；

Figure 12 is another schematic cross-section for the electroacoustic device that the utility model embodiment provides；

Figure 13 is another schematic cross-section for the electroacoustic device that the utility model embodiment provides；

Figure 14 is another schematic cross-section for the electroacoustic device that the utility model embodiment provides；

Figure 15 is the rearview for the mobile terminal that the utility model embodiment provides；

Figure 16 is the decomposition diagram for the mobile terminal that the utility model embodiment provides.

Specific embodiment

The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of making the creative labor All other embodiments obtained shall fall within the protection scope of the present invention.

In the description of the utility model embodiment, it is to be understood that the orientation of the instructions such as term " thickness " or position are closed Be for based on orientation shown in the drawings or position relationship, be for only for ease of description the utility model and simplify description rather than Imply or indicate that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore cannot It is interpreted as the limitation to the utility model.

Referring to Fig. 1, the utility model provides a kind of electroacoustic component 100, the electroacoustic component 100 includes frame 10, shakes Film 20 and drive component 30.With host cavity 11, the host cavity 11 has the frame 10 at the top of the frame 10 Mounting hole 12.The frame 10 is equipped with the leak holes 13 for penetrating through the host cavity 11 in side.The vibrating diaphragm 20 is fixed on described The top of frame 10, and cover the mounting hole 12.The driving component 30 is contained in the host cavity 11, is shaken described in driving Film 20 shakes, and the leak holes 13 leak to the 11 inside points sound wave of host cavity outside the host cavity 11.It is appreciated that It is that the electroacoustic component 100 is applied to mobile terminal, which can be mobile phone, tablet computer or laptop etc.. The mobile terminal in 10 side of the frame position opposite with the leak holes 13 by setting sound-absorbing structure so that sound-absorbing Structure absorbs the acoustic wave segment in the host cavity 11 through the leak holes 13, to improve the tonequality of the electroacoustic component 100.

Leak holes 13 are set by the side of the frame 10, the leak holes 13 are by the 11 inside points sound wave of host cavity Outside release to electroacoustic component 100 so that external sound-absorbing structure is inhaled in the side of the electroacoustic component 100 through the leak holes 13 Receiving portions sound wave, i.e., described electroacoustic component 100 is on the direction opposite with vibrating diaphragm 20 without providing using space, so as to save The electroacoustic component 100 can reduce the electroacoustic component 100 and sound-absorbing knot with using space in 20 relative direction of vibrating diaphragm The integral thickness of structure, improves user experience.

In present embodiment, the frame 10 includes the bottom 15 that top 14 and relatively described top 14 are set.The peace Dress hole 12 is opened in 14 end face of top.The top 14 is fixedly connected with the periphery of the vibrating diaphragm 20.14 end face of top The periphery of the vibrating diaphragm 20 can be bonded.The leak holes 13 are between the top 14 and the bottom 15.The leakage Hole 13 can be round hole or bar hole.The frame 10 can be plastic parts or metalwork.It can manage Solution, the leak holes 13 are mutually circulated by 11 interior air-flow of host cavity and the 11 outer air-flow of host cavity so that institute The acoustic wave energy stated in host cavity 11 is transferred to 11 outside of host cavity through the leakage 13, realizes the leak holes 13 by institute It states 11 internal noise of host cavity and leaks to 11 outside of host cavity.The direction that the leak holes 13 reveal sound wave substantially shakes with described The direction that film 20 shakes sounding is vertical, i.e., described leak holes 13 reveal the substantially parallel vibrating diaphragm 20 in direction of sound wave so that outer Portion's sound-absorbing structure can be in the direction of the parallel vibrating diaphragm 20 and the electroacoustic component 100 side by side.

In present embodiment, the vibrating diaphragm 20 is equipped with fold 21 between periphery and geometric center.The fold 21 is along institute State the circumferentially extending of vibrating diaphragm 20.The fold 21 reduces the tension of vibrating diaphragm 20, so that the vibrating diaphragm 20 is in geometry The region of the heart is more prone to deformation vibration.The driving component 30 applies the drive along 20 normal direction of vibrating diaphragm to the vibrating diaphragm 20 Power drives the vibrating diaphragm 20 to generate deformation.I.e. described vibrating diaphragm 20 vibrates back and forth in substantially geometric center region, to send sound Ripple.The sound wave that the vibrating diaphragm 20 is sent is propagated outside through the mounting hole 12 towards the host cavity 11, so that user receives sound wave.Institute Main speak component of the mounting hole 12 as the electroacoustic component 100 is stated, and the leak holes 13 are only to reveal the receipts The sound wave that 11 inside points of cavity volume need not be received by user.The sound wave that i.e. described vibrating diaphragm 20 is sent can also propagate to the collecting In chamber 11, the sound wave that 11 inside points of host cavity need not be easily accepted by a user is leaked to the host cavity 11 by the leakage 13 Outside, and by the sound-absorbing structure outside the host cavity 11 acoustic wave segment is sponged.In 20 vibration processes of vibrating diaphragm, make It obtains 11 internal volume of host cavity to change, to drive 11 interior air-flow of host cavity through the leak holes 13 and the host cavity 11 Outer air-flow mutually circulates.The material of the vibrating diaphragm 20 can be papery, Fiber Materials, metal material, wool material, silk material Deng.

In present embodiment, the driving component 30 includes being fixed on the first actuator 31 of the vibrating diaphragm 20 and be fixed on Second actuator 32 of the frame 10.First actuator 31 can relatively described second actuator 32 vibrate, to drive It states the vibration of vibrating diaphragm 20 and sends sound wave, and the 11 inside points sound wave of host cavity is caused to leak to the receipts by the leak holes 13 Outside cavity volume 11.First actuator 31 is slided along relatively described second actuator 32 in direction of substantially parallel 20 normal direction of vibrating diaphragm It is dynamic.First actuator 31 can relatively described second actuator 32 reciprocatingly slide, so as to drive substantially leaning on for the vibrating diaphragm 20 The region of nearly geometric center is of reciprocating vibration along normal direction.The vibrating diaphragm 20 drives when substantially adjacent to the domain oscillation of geometric center Air-flow flows, so as to generate sound wave.The sound wave that the vibrating diaphragm 20 is sent largely propagates to user outwardly, without by user The acoustic wave segment of reception leaks to the outside of the frame 10 through the leak holes 13, so as to by 10 outside sound-absorbing of institute's frame Structure absorbs.Due to the normal direction of the leakage substantially vertical vibrating diaphragm 20 in sound wave direction of the leak holes 13, i.e., described electroacoustic group Part 100 need not set sound-absorbing structure on the direction of substantially parallel 20 normal direction of vibrating diaphragm, so as to 14 He of top of frame 10 Bottom 15 can be resisted against on exterior part respectively, so that the electroacoustic component 100 can consolidate installation, and saved and made Use space.

Further, referring to Fig. 2, first actuator 31 is coil.Second actuator 32 is magnet.It is described After first actuator 31 receives current signal, magnetic field is generated.First actuator 31 is according to the variation of current signal, so as to produce Raw magnetic direction also generates variation.And second actuator 32 be permanent magnet, the magnetic direction of second actuator 32 Variation will not be generated.First actuator 31 is under the variation of current signal by the magnetic field phase interaction of second actuator 32 With can be slided closer or far from second actuator 32, and then the vibrating diaphragm 20 is driven to vibrate.Due to the described first driving Part 31 slides up and down in the spacing 323, can effectively reduce the thickness of the electroacoustic component 100.

In another embodiment, referring to Fig. 3, first actuator 31 is magnet.Second actuator 32 is line Circle.First actuator 31 is annular in shape.First actuator 31 is circumferentially fixedly connected with the fold 21.Described second drives Moving part 32 is circumferentially fixed on the inner circumferential side wall 12.

Further, referring to Fig. 4, the frame 10 includes the side plate 16 for being fixedly connected with 20 periphery of vibrating diaphragm and fixes The bottom plate 17 that in the side plate 16 and relatively described vibrating diaphragm 20 is set.The receipts are formed between the side plate 16 and the bottom plate 17 Cavity volume 11.The edge that the side plate 16 connects the vibrating diaphragm 20 forms the top 14 of the frame 10, and the bottom plate 17 forms institute State the bottom 15 of frame 10.The side plate 16 connects and encloses the mounting hole 12 on the inside of the edge of the vibrating diaphragm vibrating diaphragm 20.Institute It states leak holes 13 and is arranged at the side plate 16.

In present embodiment, first actuator 31 and second actuator 32 are respectively positioned on the host cavity 50.Institute It states the second actuator 32 and is fixedly connected with the bottom plate 17 towards 20 one side of vibrating diaphragm.Utilize the relatively described vibrating diaphragm of the bottom plate 17 20 are set, and the sound wave that the bottom plate 17 sends the vibrating diaphragm 20 reflects so that the 11 inside points sound wave of host cavity can To leak to 10 outside of frame through the leak holes 13.And first actuator 31 and second actuator 32 In in the host cavity 11, the inner space of the host cavity 11 is made full use of, effectively reduces 100 thickness of electroacoustic component.

In one embodiment, as shown in figure 5, second actuator 32 contacts at 16 inside of the side plate, described the Two actuators 32 are opened up wears sound hole 33 with what the leak holes 13 communicated.The sound wave that the vibrating diaphragm 20 is sent wears sound described in passing through successively Hole 33 and the leak holes 13 leak to 10 outside of frame.Sound hole 33 is worn described in the warp of leak holes 13 to drive with described second The space of 32 inside of moving part communicates.The one end of second actuator 32 away from the bottom plate 17 need not provide Acoustic Wave Propagation and lead to Road, i.e., described second actuator 32 can be close proximity to the vibrating diaphragms 20 away from described 17 one end of bottom plate so that the electroacoustic group 100 thickness of part can be sufficiently small.The internal diameter for wearing sound hole 33 is more than the outer diameter of the leak holes 13, facilitates the host cavity 11 Inside points sound wave wears sound hole 33 described in passing through.

Further, in one embodiment, as shown in fig. 6, the leak holes 13 are through hole.The leak holes 13 run through The side plate 16, the geometric centre axes of the leak holes 13 are located at the side plate 16 at the vibrating diaphragm 20.The leakage The distance of hole 13 to the vibrating diaphragm 20 is less than the leak holes 13 to the distance of the bottom plate 17, and the vibrating diaphragm 20 is facilitated to propagate to The acoustic wave segment of the host cavity 11 quickly spreads out of 10 outside of frame through the leak holes 13.The quantity of the leak holes 13 To be multiple.Circumferentially equidistant arrangement of multiple leak holes 13 along the frame 10.Utilize multiple 13 leakage sound of leak holes Ripple improves the flux of the leakage sound wave of the electroacoustic component 100, improves the acoustical quality of the electroacoustic component 100.

In another embodiment, as shown in fig. 7, the leak holes 13 are through hole.The leak holes 13 run through the side plate 16, the geometric centre axes of the leak holes 13 are located at the side plate 16 at the bottom plate 17.The leak holes 13 are to institute The distance for stating vibrating diaphragm 20 is more than the leak holes 13 to the distance of the bottom plate 17.

In another embodiment, as shown in figure 8, the leak holes 13 are bar hole.The leak holes 13 are in the side plate 16 extending direction at the vibrating diaphragm 20 at the bottom plate 17 from extending.The leak holes 13 are in the side plate 16 Accounting increases so that 11 interior air-flow of host cavity increases the 10 outer circulating rate of frame, improves the leak holes 13 and lets out Reveal the efficiency of sound wave.

In another embodiment, as shown in figure 9, the leak holes 13 are bar hole.The side plate 16 includes the first sub- side Plate 161 and the second sub- side plate 162 being connected with the described first sub- side plate 161 in angle, the leak holes 13 extend laterally, simultaneously Through the described first sub- side plate 161 and the second sub- side plate 162 so that 11 interior air-flow of host cavity to the frame 10 outside Circulating rate increases, and improves the efficiency that the leak holes 13 reveal sound wave.

Referring to Fig. 10, the utility model also provides a kind of electroacoustic device 200, the electroacoustic device 200 includes the electricity Sound component 100, the electroacoustic device 200 further include box body 40, and the box body 40 has sound chamber 41, and the electroacoustic component 100 is solid Due in the sound chamber 41.

In present embodiment, the volume of the sound chamber 41 is more than the volume of the electroacoustic component 100.The electroacoustic component The sound wave that 100 vibrating diaphragm 20 is sent leaks to the sound chamber 41 through the leak holes 13, so as to which the sound chamber 41 absorbs the receipts The acoustic wave segment revealed in cavity volume 11 through the leak holes 13.

Further, the box body 40 includes the second cover board that the first cover board 42 and relatively described first cover board 42 are set 43 and the 3rd cover board 44 that is fixed between first cover board 42 and second cover board 43.The vibrating diaphragm 20 is resisted against First cover board 42, the distance of the 3rd cover board 44 to the frame 10 be more than the bottom plate 63 to the frame 10 away from From.

In present embodiment, the bottom plate 17 contacts at second cover board 43.I.e. described vibrating diaphragm 20 is to the bottom plate 17 Distance be substantially equal to first cover board 42 to the distance of second cover board 43 so that the thickness of the box body 40 with it is described The thickness of electroacoustic component 100 is roughly the same, realizes that the thickness of the electroacoustic device 200 is sufficiently small.First cover board 42 is equipped with Transaudient portion 421, the transaudient portion 421 substantially cover the frame 20.The vibrating diaphragm 20 is towards the transaudient portion 421.As one Kind embodiment, the transaudient portion 421 can be through hole.The pronunciation mouth 12 is docked with the transaudient portion 421.The vibrating diaphragm 20 Towards the Acoustic Wave Propagation sent outside the transaudient portion 421 to user.The frame 10 is in the outside of the mounting hole 12 and the box Body 40 seals so that the sound wave that the vibrating diaphragm 20 is sent through the mounting hole 12 will not be leaked in the sound chamber 41.Described Three cover boards 44 are to enough sound wave spaces are set between the side plate 16, between the 3rd cover board 44 and the side plate 16 Enough sound waves are absorbed, and acoustic wave energy is consumed so that the sound wave that the host cavity 11 is revealed through the leak holes 13 exists The sound chamber 41 eliminates, and improves the tonequality of the electroacoustic device 200.

In another embodiment, 1 is please referred to Fig.1, there are gap h, institutes between second cover board 42 for the bottom plate 17 State the 3rd cover board 44 between the side plate 16 exist distance H.The gap h is less than the distance H, so that the box body 100 thickness can be sufficiently small, and the leak holes 13 to absorption sound wave efficiency between the 3rd cover board 44 improves, and There is also segment spaces between second cover board 43 and the bottom plate 17 to absorb sound wave, further improves the electroacoustic device 200 tonequality.

Further, 2 are please referred to Fig.1, the sound chamber 41 is outside the frame 10 filled with sound-absorbing material 45, the suction Sound material 45 absorbs the sound wave revealed through the leak holes 13.

In present embodiment, the sound-absorbing material 45 absorbs the sound wave revealed from the leak holes 13.It is understood that The leak holes 13 reveal 11 internal noise of host cavity so that the noise in the host cavity 11 is inhaled by the sound-absorbing material 45 It receives so that bass effect is presented in the sound that the electroacoustic device 200 is sent, and improves tonequality, adds user experience.

Further, 3 are please referred to Fig.1, the electroacoustic device 200 further includes the block piece 50 for covering the leak holes 13. The block piece 50 isolates from the sound-absorbing material 45 outside the host cavity 11.The block piece 50 can be let out described in covering Reveal hole 13 and be located at 16 inside of side plate positioned at 16 outside of side plate or the covering leak holes 13.Pass through institute It states block piece 50 and covers the leak holes 13, the sound-absorbing material 45 is avoided to enter the host cavity 11, avoids influencing the electricity 100 sounding of sound component.The block piece 50 covers the leak holes 13 so that the sound-absorbing material 45 can be filled up completely in sound Space of the chamber 41 outside the frame 10, without being contained in the sound again after being first packaged to the sound-absorbing material 45 In chamber 41, the tonequality of the electroacoustic device 200 had not only been improved, but also has reduced the production cost of the electroacoustic device 200.Certainly, In other embodiments, the diameter of the leak holes 13 can also be set to be less than the diameter of the sound-absorbing material 45, so as to not It needs to being covered using the block piece 50 to the leak holes 13.

In one embodiment, the block piece 50 is screen cloth.The block piece 50 fits in the outside of the side plate 16. The cell inner diameter of the block piece 50 is less than the diameter of the sound-absorbing material 45.The block piece 50 is to passing through the leak holes 13 Sound wave do not stop so that the sound-absorbing material 45 absorb sound wave.And the block piece 50 can stop the sound absorption material Material 45 enters in the host cavity 11.The block piece 50 is fixed on the leak holes 13 outside the opening of the side plate 16 Side, i.e., the edge of described block piece 50 can be fixed on the top 14 of the frame 10 and bottom 15 so that the leak holes 13 It is maximized in the accounting of the side plate 16, improves the sound wave flux that the leak holes 13 can be revealed, improve the electroacoustic The tonequality of device 200.The block piece 50 can be coated on 20 side of frame, so that sound-absorbing material 45 can be coated on 20 side of frame, you can to the 20 Omnibearing absorbing sound wave of frame, to increase the sound-absorbing material 45 in the sound Loading in chamber 41 improves the efficiency that the sound-absorbing material 45 absorbs sound wave.As a kind of embodiment, the block piece 50 The side plate 16 is fixed on through Shooting Technique.During the block piece 50 is fixed on the frame 10, institute is molded first Block piece 50 is stated, is then positioned over using the block piece 50 as inserts in the molding die of the frame 10, the frame 10 It is molded through Shooting Technique, the 50 heated Shooting Technique of block piece is integrated with the frame 10 so that the block piece 50 With 10 stabilized structure of frame.Alternatively, the block piece 50 is plastic cement screen cloth.The block piece 50 and institute Frame 10 is stated to be molded through nanometer Shooting Technique using double-color mold.The shaping mold cavity of the block piece 50 makes through nanometer technology, So that 590 formed precision of block piece improves so that the block piece 50 can be molded multiple micropores, and stabilized structure.Institute Stating block piece 50 can stop that the sound-absorbing material 45 enters in the frame 10, and the leak holes 13 is allowed to reveal sound wave extremely In the sound chamber 41.

In another embodiment, as shown in figure 14, the block piece 50 is partition plate, and the block piece 50 includes and the side The opposite baffle 51 of plate 16 and the connecting plate 52 being fixed between the baffle 51 and the side plate 16.The connecting plate 52 encloses Around 13 outside of leak holes.There are spacing between the baffle 51 and the side plate 16, the leak holes 13 are in institute It states communication space on the outside of the openend of side plate 16 to increase, the sound wave that the leak holes 13 are revealed is passing through the leak holes 13 Afterwards, propagating to the path of the sound-absorbing material 45 increases so that the sound-absorbing material 45 absorbs sound wave efficiency and improves, further Increase the tonequality of the electroacoustic device 200.

5 and Figure 16 are please referred to Fig.1, the utility model also provides a kind of mobile terminal 300, and the mobile terminal 300 includes Housing 60 and the mainboard 61 being fixed in the housing 60.The electroacoustic device 200 is fixed on the bottom of the housing 60.It is described First actuator 31 of electroacoustic component 100 is electrically connected the mainboard 61, receives the current signal of the mainboard 61, and then can phase Second actuator 32 is slided, and causes 100 sounding of electroacoustic component.It is understood that the mobile terminal 300 Can be mobile phone, tablet computer, laptop etc..The mobile terminal 300 further includes center 70, and the center 70 is fixed on In the housing 60.The mainboard 61 and the electroacoustic device 200 are both secured on the center 70.Before the housing 60 includes The back-cover 63 that lid 62 and the relatively described lid of protecgulum 62 close.The protecgulum 62 has glass cover-plate and display screen to form.The back-cover 63 For metal battery rear cover.The center 70 is fixed between the protecgulum 62 and the back-cover 63.The electroacoustic device 200 is fixed In the bottom of the center 70.The bottom of the center 70 is the opposite one end of the receiver of the mobile terminal 300.The electricity 3rd cover board 44 of acoustic device 300 is fixed on the center 70.First cover board 42 is towards the back-cover 63.I.e. described vibrating diaphragm 20 towards the back-cover 63.There are spacing between the vibrating diaphragm 20 and the back-cover 63.So that the vibrating diaphragm 20 is towards the collecting The sound wave sent outside chamber 11 can pass between the back-cover 63 and first cover board 42 along the direction of the parallel back-cover 63 It broadcasts.The back-cover 63 is equipped with multiple loud-speaker openings 631 in bottom side.The vibrating diaphragm 20 is flat towards the sound wave edge that the back-cover 63 is sent The direction of the row back-cover 63 is propagated at multiple loud-speaker openings 631, and propagates to use by multiple loud-speaker openings 631 Family.

Leak holes are set by the side of the frame, the leak holes discharge the host cavity inside points sound wave to electricity Outside sound component so that external sound-absorbing structure absorbs acoustic wave segment, i.e. institute in the side of the electroacoustic component through the leak holes Electroacoustic component is stated on the direction opposite with vibrating diaphragm without providing using space, so as to save the electroacoustic component with vibrating diaphragm Space is used in relative direction, the integral thickness of the electroacoustic component and sound-absorbing structure can be reduced, improve user experience.

The above are the embodiments of the utility model embodiment, it is noted that for the ordinary skill people of the art For member, on the premise of the utility model embodiment principle is not departed from, several improvements and modifications can also be made, these improvement The scope of protection of the utility model is also considered as with retouching.

Claims (20)

1. a kind of electroacoustic device, which is characterized in that the electroacoustic device includes box body, frame, vibrating diaphragm, drive component and sound absorption material Material, the box body have sound chamber, and the frame is fixed on the sound intracavitary, and the side of the frame, which is equipped with, penetrates through the sound chamber Leak holes, the vibrating diaphragm are fixed on the frame, and the driving component is contained in the frame, drives the diaphragm oscillations, The sound-absorbing material is contained in the sound intracavitary and outside the frame, and the frame is sent via the leak holes to absorb Sound wave outside frame.

2. electroacoustic device according to claim 1, which is characterized in that the electroacoustic device, which further includes, covers the leak holes Block piece, the block piece isolates from the sound-absorbing material outside the frame.

3. electroacoustic device according to claim 2, which is characterized in that the block piece is screen cloth, and the block piece is through note Modeling technique is fixed on the side of the frame.

4. electroacoustic device according to claim 3, which is characterized in that the sound-absorbing material for sound absorption particle, the sound absorption The diameter of particle is more than the cell inner diameter of the block piece.

5. electroacoustic device according to claim 3, which is characterized in that the block piece coats the side of the frame.

6. electroacoustic device according to claim 2, which is characterized in that the block piece is partition plate, and the block piece includes The baffle opposite with the frame and the connecting plate being fixed between the baffle and the frame, the connecting plate are enclosed in institute It states around on the outside of leak holes.

7. according to the electroacoustic device described in 6 any one of claim 1 ￣, which is characterized in that the sound-absorbing material is filled in institute State sound intracavitary and the space outside the frame.

8. according to the electroacoustic device described in 6 any one of claim 1 ￣, which is characterized in that the frame includes side plate and bottom Plate, the side plate are fixedly connected on the periphery of the vibrating diaphragm, and the bottom plate is fixedly connected with the side plate and relatively described vibrating diaphragm is set It puts, the leak holes run through the side plate, and the driving component is fixed between the vibrating diaphragm and the bottom plate.

9. electroacoustic device according to claim 8, which is characterized in that the central axis of the leak holes is located at the side plate At the vibrating diaphragm.

10. electroacoustic device according to claim 8, which is characterized in that the central axis of the leak holes is located at the side Plate is at the bottom plate.

11. electroacoustic device according to claim 8, which is characterized in that the leak holes the side plate extending direction by Extend at the vibrating diaphragm at the bottom plate.

12. electroacoustic device according to claim 8, which is characterized in that the leak holes are in the extending direction of the side plate The parallel bottom plate.

13. according to the electroacoustic device described in 6 any one of claim 1 ￣, which is characterized in that the quantity in the leakage portion is more It is a, circumferentially equidistant arrangement of multiple leakage portions along the frame.

14. according to the electroacoustic device described in 6 any one of claim 1 ￣, which is characterized in that the driving component includes first Actuator and the second actuator, first actuator are fixed on the vibrating diaphragm, and second actuator is fixed on the frame, First actuator can relatively described second actuator vibration.

15. electroacoustic device according to claim 14, which is characterized in that second actuator is equipped with and the leak holes What is communicated wears sound hole.

16. electroacoustic device according to claim 15, which is characterized in that second actuator is contacted in the frame Side wall.

17. according to the electroacoustic device described in 6 any one of claim 1 ￣, which is characterized in that the box body includes the first cover board First cover board is set relatively the second cover board and be fixed between first cover board and second cover board the Three cover boards form the sound chamber between first cover board, the second cover board and the 3rd cover board.

18. electroacoustic device according to claim 17, which is characterized in that first cover board is equipped with transaudient portion, described to shake Film towards the transaudient portion, and through the transaudient portion outside the box body sounding.

19. electroacoustic device according to claim 17, which is characterized in that the distance of the 3rd cover board to the frame is big In the distance of second cover board to the frame.

20. a kind of mobile terminal, which is characterized in that the mobile terminal includes the electricity described in 19 any one of claim 12 ￣ Acoustic device.