CN205987334U - Vibrating diaphragm, speaker, sound chamber subassembly and terminal - Google Patents

Abstract

The embodiment of the utility model provides a vibrating diaphragm, including main part and rib, be formed with a plurality of miniature holes in this main part and this rib at least one. The vibrating diaphragm that this scheme provided owing to be formed with a plurality of miniature holes in main part at the vibrating diaphragm and in the rib at least one, can reduce the density of vibrating diaphragm to when the speaker is applied to to the vibrating diaphragm, can reduces the vibration quality of speaker, thereby improve the acoustic pressure level of speaker.

Description

A kind of vibrating diaphragm, speaker, sound chamber assembly and terminal

Technical field

This utility model is related to field of terminal technology and in particular to a kind of vibrating diaphragm, speaker, sound chamber assembly and terminal.

Background technology

Speaker particularly Microspeaker uses very universal in the life of people.For example, smart mobile phone Internal speaker, has become as the requisite ingredient of smart mobile phone.The quality of speaker is to a great extent Affect the effect that people enjoy audio frequency and video.

Speaker relies on the vibrating diaphragm of inside loudspeakers to drive air to produce vibration, converts the electrical signal to acoustical signal, from And produce sound.At present, the vibrating diaphragm of speaker mobile terminal using is by PEN (PEN), PAR The polymerization of one or more of the thin-film material such as (poly- virtue fat), PEI (polyethyleneimine) is formed.These thin-film materials are rigidly low. When being worked in speaker using the thin film that these thin-film materials are formed, easily produce diaphagras, lead to the acoustic pressure of speaker Level is low.

Utility model content

This utility model embodiment provides a kind of vibrating diaphragm, speaker, sound chamber assembly and terminal, can improve and have this vibrating diaphragm Speaker sound pressure level.

This utility model embodiment provides a kind of vibrating diaphragm, including main part and rib, described main part and described reinforcement Multiple micro-holes are formed with least one of portion.

Accordingly, this utility model embodiment also provides a kind of speaker, and including voice coil loudspeaker voice coil and vibrating diaphragm, described voice coil loudspeaker voice coil is arranged on The side of described vibrating diaphragm is simultaneously connected with described vibrating diaphragm, and described vibrating diaphragm includes main part and rib, described main part and described plus It is formed with multiple micro-holes at least one of strong portion.

Accordingly, this utility model embodiment also provides a kind of sound chamber assembly, including above-mentioned speaker, described sound chamber assembly Also include sound cavity shell, described speaker is arranged on inside described sound cavity shell, between described speaker and described sound cavity shell It is formed with cavity.

Accordingly, this utility model embodiment also provides a kind of terminal, including above-mentioned sound chamber assembly.

The vibrating diaphragm that this utility model embodiment provides, including main part and rib, described main part and described rib At least one of on be formed with multiple micro-holes.The vibrating diaphragm that the program provides, due in the main part and rib of vibrating diaphragm At least one on be formed with multiple micro-holes, the density of vibrating diaphragm can be reduced, thus when vibrating diaphragm is applied to speaker, can Reduce the oscillating mass of speaker, thus improving the sound pressure level of speaker.

Brief description

In order to be illustrated more clearly that the technical scheme in this utility model embodiment, below will be to required in embodiment description Accompanying drawing to be used is briefly described.It should be evident that drawings in the following description are only some realities of the present utility model Apply example, for those skilled in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings Other accompanying drawings.

Fig. 1 is the structural representation of the vibrating diaphragm that this utility model embodiment one provides.

Fig. 2 is the sectional view along A-A direction for the vibrating diaphragm in Fig. 1.

Fig. 3 is the close-up schematic view of the vibrating diaphragm part B in Fig. 2.

Fig. 4 is the close-up schematic view of vibrating diaphragm of the prior art.

Fig. 5 is the structural representation of the speaker that this utility model embodiment two provides.

Fig. 6 is the sectional view along C-C direction for the speaker in Fig. 5.

Fig. 7 is the sectional view of the sound chamber assembly that this utility model embodiment three provides.

Specific embodiment

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe.Obviously, described embodiment is only a part of embodiment of this utility model, rather than whole Embodiment.Based on the embodiment in this utility model, those skilled in the art are obtained under the premise of not making creative work The every other embodiment obtaining, broadly falls into the scope of this utility model protection.

The explanation of following embodiment is with reference to additional schema, may be used to the specific of enforcement in order to illustrate this utility model Embodiment.The direction term that this utility model is previously mentioned, for example " on ", D score, "front", "rear", "left", "right", " interior ", " Outward ", the (if present) such as " side ", is only the direction with reference to annexed drawings.Therefore, the direction term of use be illustrate and Understand this utility model, and be not used to limit this utility model.

Term " first " in specification and claims of the present utility model and above-mentioned accompanying drawing, " second ", " Three " etc. (if present) is for distinguishing similar object, without for describing specific order or precedence.Should manage Solution, the object of so description can exchange in the appropriate case.Additionally, term " comprising " and " having " and their any change Shape is it is intended that cover non-exclusive comprising.For example, contain the process of series of steps, method or contain a series of moulds The device of block or unit, terminal, system are not necessarily limited to those steps clearly listed or module or unit, can also include not having There are the step clearly listed or module or unit it is also possible to include solid for these processes, method, device, terminal or system Some other steps or module or unit.

This utility model embodiment provides a kind of vibrating diaphragm, speaker, sound chamber assembly and terminal, is carried out respectively below in detail Explanation.

Embodiment one

The present embodiment provides a kind of vibrating diaphragm.This vibrating diaphragm can apply in the speaker of terminal.This terminal can be intelligence The equipment such as mobile phone, panel computer.

Coil-moving speaker is extensively applied in the terminal, and the audio electrical signal that terminal is produced is converted into acoustic signals, Thus producing sound.The core of coil-moving speaker is voice coil loudspeaker voice coil and vibrating diaphragm.Voice coil loudspeaker voice coil is placed in magnetic field.When produce in terminal During audio electrical signal flowing through voice coil, voice coil loudspeaker voice coil can be subject to the effect of magnetic field force (i.e. Lorentz force) to produce vibration in magnetic field.With The vibrating diaphragm that voice coil loudspeaker voice coil is connected consequently also produces vibration, and drives the air around vibrating diaphragm to produce vibration, thus producing sound.

With reference to Fig. 1, Fig. 1 show the structural representation of the vibrating diaphragm of this utility model embodiment offer.This vibrating diaphragm can be answered For in speaker.Vibrating diaphragm 10 is thin film.The shape of vibrating diaphragm 10 is adapted with the shape of speaker, and the shape of vibrating diaphragm 10 can be Circular.

Vibrating diaphragm 10 includes main part 11, rib 12 and installation portion 13.Main part 11 is the border circular areas in the middle of vibrating diaphragm 10, The surface of main part 11 is continuous flat surface.Rib 12 is the annular region of main part 11 periphery.In vibrating diaphragm 10 one On individual surface, on rib 12, along the circumferential direction spaced set has multiple reinforcements 121.Reinforcement 121 can increase vibrating diaphragm 10 rigidity.The section of reinforcement 121 is the triangle that raises up of surface or arc along vibrating diaphragm 10.On rib 12, often Region between two reinforcements 121 is flat surface.Installation portion 13 is the marginal area of vibrating diaphragm 10, and with rib 12 even Connect.The surface of installation portion 13 is flat surface.Installation portion 13 is used for making vibrating diaphragm 10 be installed to other assemblies (for example, speaker) On.

Vibrating diaphragm 10 is whippy thin film, can be in the thickness direction up-down vibration of vibrating diaphragm.Vibrating diaphragm 10 passes through installation portion After 13 are installed to speaker, the main part 11 of vibrating diaphragm 10 and rib 12 are as vibration area.During vibrating diaphragm 10 vibration, vibration area The air driving vibrating diaphragm both sides vibrates, therewith to produce sound.

Referring to figs. 2 and 3.Fig. 2 show the vibrating diaphragm 10 in Fig. 1 along the sectional view in A-A direction, and Fig. 3 is the vibrating diaphragm in Fig. 2 The close-up schematic view of part B.Multiple micro-holes are formed with vibrating diaphragm 10.Micro-hole can be only formed in the main body of vibrating diaphragm 10 It is also possible to be concurrently formed on main part 11 and rib 12 in portion 11 or installation portion 12, main part can also be concurrently formed at 11st, on rib 12 and installation portion 13.In practical application, vibrating diaphragm 10 can be integrally formed by carbon nanomaterial.As shown in figure 3, Multiple micro-holes on vibrating diaphragm 10 are honeycomb texture.Each micro-hole in honeycomb texture is in regular hexagon.Micro-hole is in positive six Side shape makes vibrating diaphragm 10 Stability Analysis of Structures, strengthens the rigidity of vibrating diaphragm 10 simultaneously.Form multiple micro-holes so that vibrating diaphragm 10 on vibrating diaphragm 10 Inside be in hollow structure, the density of vibrating diaphragm 10 can be reduced.Vibrating diaphragm 10 is made using carbon nanomaterial, and carbon nanomaterial has Less density is it is thus possible to reduce the density of vibrating diaphragm 10 further.Therefore, the vibrating diaphragm 10 made using carbon nanomaterial, and And form micro-hole on vibrating diaphragm 10, can effectively mitigate the quality of vibrating diaphragm 10.

With reference to Fig. 4, Fig. 4 show the close-up schematic view of vibrating diaphragm of the prior art.Vibrating diaphragm 20 of the prior art For solid construction.Vibrating diaphragm 20 is by PEN (PEN), the material such as PAR (poly- virtue fat), PEI (polyethyleneimine) Make.

Common vibrating diaphragm is made using materials such as PEN, PAR, PEI, and the rigidity of vibrating diaphragm is little.During diaphragm oscillations, shake The Vibration Condition of film regional is inconsistent, thus easily producing diaphagras, leads to the sound of the speaker using common vibrating diaphragm Arbitrarily downgrade reduction.

Vibrating diaphragm in this utility model embodiment, due to employing carbon nanomaterial, and forms multiple tools on vibrating diaphragm There is orthohexagonal micro-hole so that the rigidity of the common vibrating diaphragm of the ratio of rigidity of vibrating diaphragm is big.During diaphragm oscillations sounding, energy The generation of enough effectively suppression diaphagras is such that it is able to improve the sound pressure level of the speaker using this vibrating diaphragm.

Referring again to Fig. 1.The region shown in dotted line 15 in Fig. 1 is effective vibration area of vibrating diaphragm 10.Shown in dotted line 14 Region is effective vibration area of the common vibrating diaphragm of same homalographic.Because the vibrating diaphragm in this utility model embodiment adopts carbon nanometer Material is made, and forms multiple rigidity having orthohexagonal micro-hole, improve vibrating diaphragm on vibrating diaphragm, can suppress to shake The diaphagras of film.Therefore, in the case of vibrating diaphragm area equation, the vibrating diaphragm in this utility model embodiment has than common vibrating diaphragm There is bigger effective vibration area.

Below equation is the computing formula of speaker sound pressure level：

Wherein, P is the sound pressure level of speaker, and B is the magnetic induction in speaker, and L is the effective of speaker coil Length, ρ is atmospheric density, and S is effective vibration area of vibrating diaphragm in speaker, and R is the DC impedance of coil, and m is speaker Oscillating mass.

Due to being formed with multiple micro-holes on vibrating diaphragm, and vibrating diaphragm is made using carbon nanomaterial, and this utility model is implemented Vibrating diaphragm in example has less density than common vibrating diaphragm, and the therefore vibrating diaphragm with homalographic is less than the quality of common vibrating diaphragm, from And the oscillating mass m of speaker can be reduced.Simultaneously as the vibrating diaphragm in this utility model embodiment improves the firm of vibrating diaphragm Degree, can effectively suppress the diaphagras of vibrating diaphragm, the vibrating diaphragm with homalographic has bigger effective vibration area than common vibrating diaphragm S.As shown from the above formula, in the case that other specification is constant, reduce the oscillating mass m of speaker, increase the effective of vibrating diaphragm Vibration area S, can increase sound pressure level P of speaker.

From the foregoing, it will be observed that the vibrating diaphragm that this utility model embodiment provides, including main part and rib, main part and rib At least one of on be formed with multiple micro-holes.The vibrating diaphragm that the program provides, due in the main part and rib of vibrating diaphragm At least one on be formed with multiple micro-holes, the density of vibrating diaphragm can be reduced, thus when vibrating diaphragm is applied to speaker, can Reduce the oscillating mass of speaker, thus improving the sound pressure level of speaker.

Embodiment two

The present embodiment provides a kind of speaker.This speaker can apply to terminal.This terminal can be smart mobile phone, put down Plate apparatus such as computer.

With reference to Fig. 5 and Fig. 6.Fig. 5 show the structural representation of the speaker of this utility model embodiment offer, and Fig. 6 is Speaker in Fig. 5 is along the sectional view in C-C direction.

Speaker 30 includes oscillating component, magnetic circuit part and support section.

Oscillating component includes vibrating diaphragm 31, voice coil loudspeaker voice coil 32.Voice coil loudspeaker voice coil 32 is arranged on the side of vibrating diaphragm 31 and is connected with vibrating diaphragm 31.Voice coil loudspeaker voice coil 32 modes realizing being connected with vibrating diaphragm 31 have multiple.For example, voice coil loudspeaker voice coil 32 can be connected with vibrating diaphragm 31 by way of bonding.

Vibrating diaphragm 31 is thin film.The shape of vibrating diaphragm 31 is adapted with the shape of speaker 30, and the shape of vibrating diaphragm 31 can be circle Shape.

Vibrating diaphragm 31 includes main part, rib and installation portion.Main part is the border circular areas in the middle of vibrating diaphragm 31, main part Surface is continuous flat surface.Rib is the annular region of main part periphery.On a surface of vibrating diaphragm 31, rib On along the circumferential direction spaced set have multiple reinforcements.Reinforcement can increase the rigidity of vibrating diaphragm 31.The section of reinforcement is The triangle raising up along the surface of vibrating diaphragm 31 or arc.On rib, the region between each two reinforcement is smooth table Face.Installation portion is the marginal area of vibrating diaphragm 31, and is connected with rib.The surface of installation portion is flat surface.Installation portion is used for Vibrating diaphragm 31 is made to be installed on speaker.

Vibrating diaphragm 31 is whippy thin film, can be in the thickness direction up-down vibration of vibrating diaphragm.Vibrating diaphragm 31 passes through installation portion After being installed to speaker, the main part of vibrating diaphragm 31 and rib are as vibration area.During vibrating diaphragm 31 vibration, vibration area drives and shakes The air of film both sides vibrates therewith, to produce sound.

Multiple micro-holes are formed with vibrating diaphragm 31.Micro-hole can be only formed in main part and the rib of vibrating diaphragm 31, Installation portion can be concurrently formed at.In practical application, vibrating diaphragm 31 can be integrally formed by carbon nanomaterial.Multiple on vibrating diaphragm 31 Micro-hole is honeycomb texture.Each micro-hole in honeycomb texture is in regular hexagon.Micro-hole makes vibrating diaphragm 31 in regular hexagon Stability Analysis of Structures, strengthens the rigidity of vibrating diaphragm 31 simultaneously.Form multiple micro-holes so that the inside of vibrating diaphragm 31 is in hollow knot on vibrating diaphragm 31 Structure is it is thus possible to reduce the density of vibrating diaphragm 31.Vibrating diaphragm 31 is made using carbon nanomaterial, and carbon nanomaterial has less close Degree is such that it is able to reduce the density of vibrating diaphragm 31 further.Therefore, the vibrating diaphragm 31 made using carbon nanomaterial, and in vibrating diaphragm Form micro-hole on 31, can effectively mitigate the quality of vibrating diaphragm 31.

Vibrating diaphragm 31 is made using carbon nanomaterial, and formed on vibrating diaphragm multiple there is orthohexagonal micro-hole, carry The high rigidity of vibrating diaphragm, can suppress the diaphagras of vibrating diaphragm.Therefore, in the case of vibrating diaphragm area equation, this utility model Vibrating diaphragm in embodiment has bigger effective vibration area than common vibrating diaphragm.

Voice coil loudspeaker voice coil 32 is wound in insulation framework by the wire with insulating outer layer and is formed.Wire on voice coil loudspeaker voice coil 32 is used for connecting Voicefrequency circuit.

Magnetic circuit part includes magnetic conductive board 33, permanent magnet 34, magnetic conduction sheet 35.Magnetic conductive board 33 is arranged on the S pole (south of permanent magnet 34 Pole) side, magnetic conduction sheet is arranged on N pole (arctic) side of permanent magnet 34.Magnetic conductive board 33 and magnetic conduction sheet 35 are used for sending permanent magnet 34 Magnetic induction line conducted, thus forming magnetic circuit.Specifically, the magnetic induction line that the N pole of permanent magnet 34 sends through magnetic conduction sheet 35, so Afterwards through magnetic conductive board 33, finally enter the S pole of permanent magnet 34, form a closed-loop path.Magnetic conductive board 33 can be irony thin plate. Magnetic conduction sheet 35 can be irony thin slice.Magnetic conductive board 33, the shape of magnetic conduction sheet 35 can be square, rectangle or circle.Magnetic conductive board 33, Can be fixed by way of bonding between permanent magnet 34, magnetic conduction sheet 35.

In one preferred embodiment, permanent magnet 34 is nanometer permanent magnet.Utilize nanotechnology in permanent magnet material One layer of soft magnetic materials is equably wrapped up on granule, or by chemical method (for example, displacement reaction) by permanent magnet material and soft magnetism Material is mutually combined with each other, and obtains permanent magnetism nano-particle.Then, then by the technology mode system such as high-pressure molding, high temperature sintering Become nanometer permanent magnet., with respect to common Nd-Fe-B permanent magnet, internal magnetic induction is higher for nanometer permanent magnet.Therefore, exist When the volume of permanent magnet is identical, higher sound pressure level is had using the speaker of nanometer permanent magnet.

In one preferred embodiment, magnetic conductive board 33 is U-shaped.Permanent magnet 34 and magnetic conduction sheet 35 are arranged on magnetic conductive board 33 U-shaped bottom.The extension of magnetic conductive board 33 both sides extends upwardly to permanent magnet 34, the both sides of magnetic conduction sheet 35.In magnetic conductive board 33 It is formed with gap 36 between the both sides of both sides extension, permanent magnet 34 and magnetic conduction sheet 35.Voice coil loudspeaker voice coil 32 is arranged in gap 36.

Support section includes support 37 and protection cap 38.Support 37 is ring-type.The outer rim of support 37 one end is provided with outer rim Raised 371.Protection cap 38 is ring-type.The section of protection cap 38 is in inverted L shape.The outer rim of protection cap 38 is provided with outer rim depression 381. Cooperated so that protection cap 38 is installed to the outer rim depression 381 in protection cap 38 by the outer rim on support 37 raised 371 On support 37.Vibrating diaphragm 31 is installed on support 37 by the installation portion on vibrating diaphragm.Specifically, the installation portion of vibrating diaphragm 31 can pass through The mode of bonding is installed on support 37.Support 37 other end is provided with Access Division 372, and U-shaped magnetic conductive board 33 passes through magnetic conductive board two The extension of side is connected to inside support 37.

In one preferred embodiment, the material of support 37 is nano material.The material of protection cap 38 can also be Nano material.Support 37 and protection cap 38 can pass through nano material injection moulding integrated molding.Using propping up that nano material is made Frame 37 and protection cap 38 have higher intensity, can improve the Mechanical Reliability of speaker.

From the foregoing, it will be observed that the speaker that this utility model embodiment provides, including voice coil loudspeaker voice coil and vibrating diaphragm, voice coil loudspeaker voice coil is arranged on vibrating diaphragm Side is simultaneously connected with this vibrating diaphragm, and this vibrating diaphragm includes main part and rib, and at least one of main part and rib are upper to be formed There are multiple micro-holes.The speaker that the program provides, due to forming at least one of the main part of vibrating diaphragm and rib There are multiple micro-holes, the density of vibrating diaphragm can be reduced, thus the vibration of speaker when vibrating diaphragm is applied to speaker, can be reduced Quality, thus improve the sound pressure level of speaker.

Embodiment three

The present embodiment provides a kind of sound chamber assembly.This sound chamber assembly can apply to terminal.This terminal can be intelligent handss The equipment such as machine, panel computer.

With reference to Fig. 7, Fig. 7 show the sectional view of the sound chamber assembly of this utility model embodiment three offer.Sound chamber assembly 40 Including speaker 41 and sound cavity shell 42.Speaker 41 is arranged on inside sound cavity shell 42.Specifically, set inside sound cavity shell 42 It is equipped with Access Division 44, speaker 41 can be connected on Access Division 44 so that speaker is installed on sound by the support of speaker Inside cavity shell 42.It is formed with cavity 43 between speaker 41 and sound cavity shell 42.

Speaker 41 includes vibrating diaphragm, voice coil loudspeaker voice coil, permanent magnet, magnetic conductive board, magnetic conduction sheet, support and protection cap.Speaker 41 wraps The all parts including refer to the description in embodiment two, will not be described here.

The inwall of sound cavity shell 42 is formed with multiple micro-holes.Preferably, the material of sound cavity shell 42 is nano material, can With by nano material injection moulding integrated molding.Multiple micro-holes on sound cavity shell 42 are honeycomb texture.Every in honeycomb texture Individual micro-hole is in regular hexagon.Micro-hole makes sound cavity shell 42 Stability Analysis of Structures in regular hexagon.Due to sound cavity shell 42 inwall On be formed with multiple micro-holes so that sound cavity shell 42 sound that can absorb in cavity 43 and the echo producing, reduce sound chamber The vibration of housing 42.Therefore, in the structure design of terminal, can be thinner by the design of sound cavity shell, be conducive to the little of terminal Type.

From the foregoing, it will be observed that the sound chamber assembly that this utility model embodiment provides, including speaker and sound cavity shell, speaker bag Include voice coil loudspeaker voice coil and vibrating diaphragm, voice coil loudspeaker voice coil is arranged on the side of vibrating diaphragm and is connected with this vibrating diaphragm, and this vibrating diaphragm includes main part and rib, main body Multiple micro-holes are formed with least one of portion and rib.The sound chamber assembly that the program provides, due to shaking in speaker Multiple micro-holes are formed with least one of the main part of film and rib, the density of vibrating diaphragm can be reduced, thus work as shaking The oscillating mass of speaker when film is applied to speaker, being reduced, thus improving the sound pressure level of speaker, and then improving sound chamber The audio of assembly.

This utility model embodiment also provides a kind of terminal.This terminal includes sound chamber assembly, and sound chamber assembly includes speaker With sound cavity shell.Speaker includes vibrating diaphragm, voice coil loudspeaker voice coil, permanent magnet, magnetic conductive board, magnetic conduction sheet, support and protection cap.Sound cavity shell can Description in reference implementation example three, all parts that speaker includes refer to the description in embodiment two, will not be described here.

A kind of vibrating diaphragm, speaker, sound chamber assembly and the terminal that above this utility model embodiment are provided have been carried out in detail Thin introduction.Specific case used herein is set forth to principle of the present utility model and embodiment, above example Explanation be only intended to help understand method of the present utility model and its core concept；Simultaneously for those skilled in the art, According to thought of the present utility model, all will change in specific embodiments and applications, in sum, this explanation Book content should not be construed as to restriction of the present utility model.

Claims (15)

1. a kind of vibrating diaphragm is it is characterised in that include main part and rib, at least in described main part and described rib It is formed with multiple micro-holes on individual.

2. vibrating diaphragm according to claim 1 is it is characterised in that the material of described vibrating diaphragm is carbon nanomaterial.

3. vibrating diaphragm according to claim 2 is it is characterised in that the plurality of micro-hole is honeycomb texture.

4. vibrating diaphragm according to claim 3 is it is characterised in that be formed with multiple reinforcements on described rib.

5. a kind of speaker is it is characterised in that include voice coil loudspeaker voice coil and vibrating diaphragm, described voice coil loudspeaker voice coil be arranged on described vibrating diaphragm side and with institute State vibrating diaphragm to connect, described vibrating diaphragm includes main part and rib, the upper shape of at least one of described main part and described rib Become to have multiple micro-holes.

6. speaker according to claim 5 is it is characterised in that the material of described vibrating diaphragm is carbon nanomaterial.

7. speaker according to claim 6 is it is characterised in that the multiple micro-holes on described vibrating diaphragm are honeycomb texture.

8. the speaker according to any one of claim 5 to 7 it is characterised in that described speaker also include permanent magnet, Magnetic conductive board and magnetic conduction sheet, described permanent magnet is used for providing magnetic field for described voice coil loudspeaker voice coil, and described magnetic conductive board is set respectively with described magnetic conduction sheet Put the two poles of the earth side in described permanent magnet, the magnetic induction line that described magnetic conductive board is used for sending described permanent magnet with described magnetic conduction sheet is carried out Conduction.

9. speaker according to claim 8 is it is characterised in that described permanent magnet is nanometer permanent magnet.

10. speaker according to claim 8 is it is characterised in that described magnetic conductive board is U-shaped, described magnetic conductive board both sides It is formed with gap, described voice coil loudspeaker voice coil is arranged in described gap between extension and described permanent magnet and described magnetic conduction sheet both sides.

11. speakers according to claim 8 are it is characterised in that described speaker also includes support and protection cap, described Protection cap is installed on the bracket, and described vibrating diaphragm is installed on described support, and described permanent magnet, magnetic conductive board and magnetic conduction sheet are installed In described internal stent.

12. speakers according to claim 11 are it is characterised in that the material of described support is nano material.

A kind of 13. sound chamber assemblies are it is characterised in that include the speaker any one of claim 5 to 12, described sound chamber Assembly also includes sound cavity shell, and described speaker is arranged on inside described sound cavity shell, described speaker and described sound cavity shell Between be formed with cavity.

14. sound chamber assemblies according to claim 13 it is characterised in that described sound cavity shell material be nano material, The inwall of described sound cavity shell is formed with multiple micro-holes.

A kind of 15. terminals are it is characterised in that described terminal includes the sound chamber assembly described in claim 13 or 14.