CN208924475U - Microphone device - Google Patents

Abstract

The utility model discloses a kind of microphone device comprising frame, vibrational system and magnetic circuit system；The vibrational system includes vibrating diaphragm, voice coil, resilient support assemblies and support frame；The support frame includes skeleton main body annular in shape and by the outwardly extending at least two skeletons interconnecting piece of the skeleton main body；The skeleton main body at least makes the skeleton interconnecting piece be connected two-by-two between the vibrating diaphragm and the voice coil；The skeleton interconnecting piece is equipped with the roof opposite with vibrating diaphragm, the bottom wall opposite with the resilient support assemblies and the side wall for connecting the roof Yu the bottom wall, the roof is connect with the bottom surface of the vibrating diaphragm, the side wall is connect with the side of the voice coil, the bottom wall is connect with the resilient support assemblies, to by the voice coil resilient suspension below the vibrating diaphragm.Compared with the relevant technologies, the microphone device stability of the utility model is good and acoustical behavior is good.

Description

Microphone device

[technical field]

The utility model relates to electroacoustic conversion art more particularly to a kind of acoustical generators for applying to portable electronic product Part.

[background technique]

With the arrival of mobile internet era, the quantity of Intelligent mobile equipment constantly rises.And in numerous mobile devices Among, mobile phone is undoubtedly most common, most portable mobile terminal device.Currently, the function of mobile phone is extremely various, one of them is just It is the music function of high-quality, therefore, the microphone device for playing sound is widely applied Intelligent mobile equipment till now Among.

The microphone device of the relevant technologies include frame and the vibrational system for being individually fixed in the frame and have magnetic The magnetic circuit system in gap；The vibrational system includes the vibrating diaphragm for being fixed on the frame, is fixed on the vibrating diaphragm and is inserted in institute It states magnetic gap and the frame is fixed on the voice coil for driving the diaphragm oscillations sounding and one end, the other end is fixed on the sound Enclose the resilient support assemblies far from described vibrating diaphragm one end.

However, the vibrating diaphragm and the resilient support assemblies are individually fixed in institute in microphone device described in the relevant technologies The opposite end of voice coil is stated, although the horizontal swing when resilient support assemblies can effectively prevent the voice coil vibrations, its The structure directly connecting with voice coil causes the design of the voice coil to be restricted, and the volume of the magnetic circuit system is also limited, from And it is limited that the acoustical behavior of the microphone device is improved.

Therefore, it is really necessary to provide a kind of new microphone device solution above-mentioned technical problem.

[utility model content]

The purpose of the utility model is to overcome above-mentioned technical problem, the sounding that a kind of stability is good and acoustical behavior is good is provided Device.

To achieve the goals above, the utility model provides a kind of microphone device comprising frame and is individually fixed in institute State the vibrational system of frame and the magnetic circuit system with magnetic gap；The vibrational system include the vibrating diaphragm for being fixed on the frame, Be inserted in the magnetic gap and drive the voice coil of the diaphragm oscillations sounding, be fixed on the frame and it is opposite with the vibrating diaphragm and Spaced resilient support assemblies and support frame；The support frame includes skeleton main body annular in shape and by described The outwardly extending at least two skeletons interconnecting piece of skeleton main body；The skeleton main body between the vibrating diaphragm and the voice coil, The skeleton interconnecting piece to by the voice coil resilient suspension below the vibrating diaphragm；The skeleton interconnecting piece is equipped with and vibrating diaphragm phase Pair roof, the bottom wall opposite with the resilient support assemblies and the connection roof and the bottom wall side wall, the top Wall is connect with the vibrating diaphragm, and the side wall is connect with the side of the voice coil, and the bottom wall is connect with the resilient support assemblies.

Preferably, the resilient support assemblies are enclosed jointly sets to form a hollow region, and the voice coil is far from the vibrating diaphragm One end is located within the scope of the hollow region.

Preferably, the roof and the bottom wall are located at the different two sides of the side wall.

Preferably, the two neighboring skeleton interconnecting piece is spaced apart from each other and surrounds an accommodating space jointly.Preferably, described Skeleton main body include the first main body for being connected to the vibrating diaphragm, the second main body for being connected to the voice coil and from the vibrating diaphragm to Voice coil direction extends and connects the third main body of first main body and second main body.

Preferably, orthographic projection of the skeleton main body along the diaphragm oscillations direction is fallen on the voice coil.

Preferably, the skeleton main body is an integral molding structure with the skeleton interconnecting piece.

Preferably, the skeleton main body and the skeleton interconnecting piece are that metal material is made, and the two is through the stamping process It is integrally formed.

Preferably, the skeleton main body and the skeleton interconnecting piece are separate structure.

Preferably, the skeleton interconnecting piece includes four and is respectively separated setting, and skeleton interconnecting piece described in every two is one Group is simultaneously connected by the skeleton main body.

Preferably, the voice coil is in rectangular configuration with rounded corners, and four skeleton interconnecting pieces are located at the voice coil Four fillets position.

Preferably, the resilient support assemblies include two and are located at the opposite sides of the voice coil, each described Resilient support assemblies include elastic component and the auxiliary vibrating diaphragm for being attached at the elastic component；The skeleton interconnecting piece is fixed on described The side far from the auxiliary vibrating diaphragm of elastic component.

Preferably, the elastic component includes the first fixed arm for being fixed on the frame, support is fixed on adjacent two respectively Two the second fixed arms of a skeleton interconnecting piece and from first fixed arm respectively to two second fixed arms Two elastic arms for extending and forming a fixed connection；The auxiliary vibrating diaphragm includes the ring of the arc-shaped structure in cross section, by the folding The first connecting portion and second connecting portion that the opposite sides of ring each extends over, it is fixed that the first connecting portion is fixed on described first The side far from the support frame of arm, the second connecting portion are fixed on the separate support rib of second fixed arm The side of frame, and it is oppositely arranged the ring with the elastic arm；The bottom wall supports are in second fixed arm.

Preferably, the elastic component includes the first fixed arm for being fixed on the frame, support is fixed on adjacent two respectively Two the second fixed arms of a skeleton interconnecting piece and from first fixed arm respectively to two second fixed arms Two elastic arms for extending and forming a fixed connection；The auxiliary vibrating diaphragm includes the ring of the arc-shaped structure in cross section, by the folding The first connecting portion and second connecting portion that the opposite sides of ring each extends over, it is fixed that the first connecting portion is fixed on described first The side far from the support frame of arm, the second connecting portion are fixed on the separate support rib of second fixed arm The side of frame, and it is oppositely arranged the ring with the elastic arm；The bottom wall is connected to the second connecting portion.

Preferably, the elastic component includes the first fixed arm for being fixed on the frame, support is fixed on adjacent two respectively Two the second fixed arms of a skeleton interconnecting piece and from first fixed arm respectively to two second fixed arms Two elastic arms for extending and forming a fixed connection；The auxiliary vibrating diaphragm includes the ring of the arc-shaped structure in cross section, by the folding The first connecting portion and second connecting portion that the opposite sides of ring each extends over, it is fixed that the first connecting portion is fixed on described first The side far from the support frame of arm, the second connecting portion are fixed on the separate support rib of second fixed arm The side of frame, and it is oppositely arranged the ring with the elastic arm；The bottom wall sandwiched is fixed on second fixed arm and institute It states between second connecting portion.

Preferably, the elastic component is flexible circuit board, and the voice coil is electrically connected with the elastic component.

Preferably, the magnetic circuit system includes that magnetic yoke, the main magnet steel for being fixed on the magnetic yoke and being respectively separated is set to The main magnet steel opposite sides and the two first secondary magnet steel that the magnetic gap is formed with the main magnet steel, each described first is secondary Magnet steel is located between two resilient support assemblies.

Preferably, the voice coil is in rectangular configuration with rounded corners, and two the described first secondary magnet steel are located at the length of the voice coil Axis two sides, two resilient support assemblies are located at the short axle two sides of the voice coil.

Preferably, the magnetic circuit system further includes being respectively separated two that are set to the other opposite sides of main magnet steel Second mate's magnet steel.

Preferably, the voice coil is in rectangular configuration with rounded corners, and two the described first secondary magnet steel are located at the length of the voice coil Axis two sides, two resilient support assemblies are located at the short axle two sides of the voice coil, and two the described second secondary magnet steel are located at described The short axle two sides of voice coil, and each described second secondary magnet steel is located at two second fixations of the same resilient support assemblies Between arm.

Preferably, the described second secondary magnet steel includes that magnet steel ontology and being each extended over by the both ends of the magnet steel ontology is formed Magnet steel reinforcement part, each magnet steel reinforcement part extend respectively between a skeleton interconnecting piece and the voice coil.

Preferably, the auxiliary vibrating diaphragm is equipped with the recessing groove being recessed from it close to a side of voice coil to the frame direction, The magnet steel ontology extends in the recessing groove.

Preferably, the magnetic circuit system further includes upper clamp plate, and the upper clamp plate includes being fixed on the annular in shape of frame to consolidate Four pole pieces determining ring and being extended respectively to the described first secondary magnet steel and the second secondary magnet steel from the fixed ring, described in four Pole piece is stacked at the described first secondary magnet steel and the second secondary magnet steel respectively, and the pole piece is secondary with corresponding described first respectively The shape matching of magnet steel or the second secondary magnet steel.

Preferably, the quality specific gravity of the vibrating diaphragm and the voice coil is less than 1:5.

Compared with prior art, in the microphone device of the utility model, the voice coil and the vibrating diaphragm and the voice coil Be interval setting with the resilient support assemblies, by be arranged include skeleton main body annular in shape and from the skeleton main body to The support frame of at least two skeleton interconnecting pieces of outer extension, make the skeleton main body be located at the vibrating diaphragm and the voice coil it Between, the skeleton interconnecting piece to by the voice coil resilient suspension below the vibrating diaphragm, roof described in the skeleton interconnecting piece Connect with the bottom surface of the vibrating diaphragm, its side wall is connect with the side of the voice coil, bottom wall is connect with the resilient support assemblies. I.e. the structure makes the resilient support assemblies be indirectly coupled to the voice coil by the support frame, on the one hand realizes to institute The inhibition of horizontal swing when stating voice coil vibrations, improves its stability；On the other hand the resilient support assemblies and sound are eliminated Limitation of circle when being directly connected to voice coil, voice coil height are no longer limited by resilient support assemblies, and microphone device whole height can be with That designs is more frivolous；The limitation of the design to magnetic circuit system is eliminated simultaneously, resilient support assemblies are not direct glued with voice coil, For magnetic circuit system without resilient support assemblies of stepping down, magnetic circuit system can realize maximized more three magnetic circuits of magnet steel or five magnetic structures, Effectively increase the acoustical behavior of the microphone device.

[Detailed description of the invention]

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings, in which:

Fig. 1 is the schematic perspective view of the utility model microphone device；

Fig. 2 is the part isometric structural decomposition diagram of the utility model microphone device；

Fig. 3 is the part-structure assembling schematic diagram of the utility model microphone device；

Fig. 4 is the enlarged drawing of part shown in B in Fig. 3；

Fig. 5 is the cut-away view of the line A-A along Fig. 1；

Fig. 6 is the enlarged drawing of part shown in C in Fig. 5；

Fig. 7 is the support frame of the utility model microphone device and the schematic perspective view of the second secondary alinco assembled；

Fig. 8 is the structural schematic diagram at another visual angle Fig. 7；

Fig. 9 is the support frame of the utility model microphone device and the schematic perspective view of voice coil assembly；

Figure 10 is the resilient support assemblies of the utility model microphone device and the schematic perspective view of support frame assembly；

Figure 11 is the schematic perspective view of the resilient support assemblies of the utility model microphone device；

Figure 12 is the stereochemical structure decomposing schematic representation of the resilient support assemblies of the utility model microphone device；

Figure 13 is the resilient support assemblies and the second secondary alinco assembled schematic diagram of the utility model microphone device.

[specific embodiment]

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work All other embodiment obtained, fall within the protection scope of the utility model.

Please refer to shown in Fig. 1-4, wherein Fig. 1 is the schematic perspective view of the utility model microphone device；Fig. 2 For the part isometric structural decomposition diagram of the utility model microphone device；Fig. 3 is that the part of the utility model microphone device is tied Structure assembling schematic diagram；Fig. 4 is the enlarged drawing of part shown in B in Fig. 3.A kind of microphone device 100 provided by the utility model, packet Include frame 1, vibrational system 2 and magnetic circuit system 3.

The frame 1 is used to support the vibrational system 2 and the magnetic circuit system 3.

The vibrational system 2 includes the voice coil of the vibrating diaphragm 21 for being fixed on the frame 1, the driving diaphragm oscillations sounding 22, it is fixed on the frame 1 and opposite and spaced resilient support assemblies 23 and support frame 24 with the vibrating diaphragm 21.

The frame 1 is fixed in described 23 one end of resilient support assemblies, and the support frame is fixed in other end support 24。

Please in combination with shown in ginseng Fig. 5-8, wherein Fig. 5 is the cut-away view of the line A-A along Fig. 1；Fig. 6 is shown in C in Fig. 5 Partial enlarged drawing；Fig. 7 is that the support frame of the utility model microphone device and the stereochemical structure of the second secondary alinco assembled are illustrated Figure；Fig. 8 is the structural schematic diagram at another visual angle Fig. 7.The support frame 24 is including skeleton main body 241 annular in shape and by institute State the outwardly extending at least two skeletons interconnecting piece 242 of skeleton main body 241.

The skeleton main body 241 is annular in shape, between the vibrating diaphragm 21 and the voice coil 22, the skeleton main body 241 at least make the skeleton interconnecting piece 242 be connected two-by-two, so as to reinforce the overall stability of the skeleton interconnecting piece 242. The skeleton interconnecting piece 242 to by 22 resilient suspension of voice coil in 21 lower section of the vibrating diaphragm.

In present embodiment, the skeleton interconnecting piece 242 includes four and is respectively separated setting, and skeleton described in every two connects Socket part 242 is one group and is connected by the skeleton main body 241.More preferably, the voice coil 22 be in rectangular configuration with rounded corners, four A skeleton interconnecting piece 242 is located at the position of four fillets of the voice coil 22.The structure of boniness frame interconnecting piece 242 can Its interfering with magnetic circuit system 3 is largely avoided, i.e. magnetic circuit system 3 can be designed using more fully space, be improved Vibration performance.

It should be noted that the skeleton main body 241 annularly includes in continuous ring-type, as in present embodiment One overall structure；It also include discontinuous ring-type, i.e., skeleton main body 241 can be multistage interval and the ring-type surrounded jointly.Its mesh Primarily to the skeleton interconnecting piece 242 is at least made to be connected two-by-two.

Specifically, the skeleton interconnecting piece 242 is equipped with the roof 2421 opposite with vibrating diaphragm 21 and the resilient support assemblies The side wall 2423 of 23 opposite bottom walls 2422 and the connection roof 2421 and the bottom wall 2422.The roof 2421 with The bottom surface of the vibrating diaphragm 21 connects, and the side wall 2423 is connect with the side of the voice coil 22, the bottom wall 2422 and the bullet Property support component 23 connect, to realize 22 resilient suspension of voice coil in 21 lower section of the vibrating diaphragm.The i.e. described resilient support The frame 1 is fixed in 23 one end of component, and the bottom wall 2422 is fixed in other end support.That is, such as Figure 10 and figure Shown in 11, the resilient support assemblies 23 are enclosed jointly to be set to form a hollow region 10.The voice coil 22 is far from the vibrating diaphragm 21 One end is located in 10 range of hollow region and forms suspension, so that the voice coil 22 can float up and down without by design limitation. The magnetic circuit system 3 has magnetic gap 36, and one end far from the vibrating diaphragm 21 of the voice coil 22 is inserted in the magnetic gap 36 It is interior.

Above structure makes the resilient support assemblies 23 are indirect to connect with the voice coil 22, but passes through the support The realization of skeleton 24 is indirectly connected with.On the one hand the indirect connection structure is realized by the resilient support assemblies 23 to the voice coil 22 Horizontal swing effective inhibition, improve the reliability and stability of the microphone device 100, on the other hand, resilient support group Part 23 with the voice coil 22 is indirect is connected, release the structure design of the voice coil 22, make the position of voice coil 22 can be along described The direction of vibration of vibrating diaphragm 21 floats up and down, and 22 height of voice coil is no longer limited by resilient support assemblies 23, to make the acoustical generator 100 whole height of part can design more frivolous；The structure design of the magnetic circuit system 3, the elasticity branch are released simultaneously Support component 23 is not direct glued with voice coil 22, effectively avoids the interference of magnetic circuit system 3 Yu the resilient support assemblies 23, magnetic circuit System 3 can realize maximization structure, effectively increase the sounding without the resilient support assemblies 23 of stepping down, magnetic circuit system 3 The acoustical behavior of device 100.

More preferably, the roof 2421 is located at the different two sides of the side wall 2423 with the bottom wall 2422.It is adjacent Two skeleton interconnecting pieces 242 are spaced apart from each other and surround jointly an accommodating space, can be used for placing magnetic steel structure.

Continuing with shown in ginseng Fig. 5-6 and Fig. 9-10, wherein Fig. 9 is the support frame and sound of the utility model microphone device Enclose the schematic perspective view of assembly；Figure 10 is the resilient support assemblies and support frame assembly of the utility model microphone device Schematic perspective view.The skeleton main body 241 can be connect with the vibrating diaphragm 21, can also be not connected to, and the skeleton main body 241 can It connect, can also be not connected to the voice coil 22.

In present embodiment, the skeleton main body 241 is connect with the voice coil 22 and the vibrating diaphragm 21 respectively.Specifically, The skeleton main body 241 includes being connected to the first main body 2411 of the vibrating diaphragm 21, being connected to the second main body of the voice coil 22 2412 and extends from the vibrating diaphragm 21 to 22 direction of voice coil and connect first main body 2411 and second main body 2412 Third main body 2413.The structure makes the skeleton main body 241 that can form a step structure.For example, first main body 2411 are connect by glued mode with the vibrating diaphragm 21 and the voice coil 22 respectively with second main body 2412.The structure adds It is strong to be indirectly connected with intensity between the voice coil 22 and the vibrating diaphragm 21, so that the stability of the support frame 24 is more preferable.

And the skeleton interconnecting piece 242 is by the skeleton main body 241 when being extended, the specially described roof 2421 with it is described The connection of first main body 2411, i.e., the described roof 2421 extends by first main body 2411, is certainly not limited to this, can also be by Second main body 2412 or the third main body 2413 extend and feasible.

In present embodiment, the quality specific gravity of the vibrating diaphragm 21 and the voice coil 22 is less than 1:5.Herein substantially, because of institute Voice coil 22 is stated than heavier, it therefore, may be because described if voice coil 22 is only connected to vibrating diaphragm 21 by the skeleton main body 241 Voice coil 22 is too heavy and influences connective stability, therefore, the side wall 2423 and 22 side phase of voice coil of the skeleton interconnecting piece 242 is arranged Even, to support voice coil 22, stability is improved.

In present embodiment, more preferably, the skeleton main body 241 falls into institute along the orthographic projection of 21 direction of vibration of vibrating diaphragm It states on voice coil 22.The structure of skeleton main body 241 described in the structure designs the effective solution voice coil 22 and the vibrating diaphragm 21 Excessive glue influences the problem of oscillation space of the vibrating diaphragm 21 when glued, so that 22 winding displacement of voice coil is more concentrated, acoustical behavior is more excellent.

It should be noted that the skeleton main body 241 falls into the voice coil along the orthographic projection of 21 direction of vibration of vibrating diaphragm On 22, skeleton main body 241 and voice coil 22 are least partially overlapped.241 range of skeleton main body be can be understood as greater than the sound The range of circle 22, that is, extend beyond the range of the voice coil 22, it is understood that is less than for 241 range of skeleton main body described The range of voice coil 22；It can certainly be that the range that the two surrounds is equal.It is preferred that 241 range of skeleton main body is less than the sound The range of circle 22.

In addition, the skeleton main body 241 is an integral molding structure with the skeleton interconnecting piece 242 in present embodiment.More Excellent, the skeleton main body 241 is that metal material is made with the skeleton interconnecting piece 242, and the two is integrated through the stamping process Molding.Certainly, the skeleton main body 241 and the skeleton interconnecting piece 242 can also be separate structure.

The structure makes the support frame 24 be integral structure, and the microphone device 100 on the one hand can be effectively suppressed The lateral oscillation of the voice coil 22 under working condition improves stability；On the other hand, the resilient support assemblies 23 pass through skeleton Interconnecting piece 242 is not direct glued with voice coil 22, effectively avoids the interference of magnetic circuit system 3 Yu the resilient support assemblies 23, can Maximize magnetic circuit system 3, high degree improves the acoustical behavior of the microphone device 100.

Incorporated by reference to shown in Figure 11-13, wherein Figure 11 is the three-dimensional knot of the resilient support assemblies of the utility model microphone device Structure schematic diagram；Figure 12 is the stereochemical structure decomposing schematic representation of the resilient support assemblies of the utility model microphone device；Figure 13 is this The resilient support assemblies of utility model microphone device and the second secondary alinco assembled schematic diagram.The quantity of the resilient support assemblies 23 It can be correspondingly arranged with 242 quantity of skeleton interconnecting piece, multiple bones can also be supported for the resilient support assemblies 23 Frame interconnecting piece 242.In present embodiment, the resilient support assemblies 23 include two and are located at the phase of the voice coil 22 To two sides.More preferably, two resilient support assemblies 23 are located at the short axle opposite sides of the voice coil 22.

Please in combination with shown in Fig. 6, each resilient support assemblies 23 are including elastic component 231 and are attached at the bullet The auxiliary vibrating diaphragm 232 of property part 231.The skeleton interconnecting piece 242 is fixed on the separate auxiliary vibrating diaphragm of the elastic component 231 232 side.

Specifically, the elastic component 231 includes being fixed on the first of the frame 1 to fix please in combination with shown in Figure 10 Arm 2311, support is fixed on two the second fixed arms 2312 of the two neighboring skeleton interconnecting piece 242 and by described respectively Two elastic arms 2313 that first fixed arm 2311 extends and forms a fixed connection to two second fixed arms 2312 respectively.

In present embodiment, the elastic component 231 is flexible circuit board, and the voice coil 22 is electrically connected with the elastic component 231 It connects.On the one hand for providing the support to the voice coil 22, external electric signal on the other hand is introduced for the voice coil 22, is avoided It is the problem of being easy broken string when the voice coil 22 introduces external electric signal, to improve its reliability by lead.

The auxiliary vibrating diaphragm 232 includes the ring 2321 of the arc-shaped structure in cross section, by opposite the two of the ring 2321 The first connecting portion 2322 and second connecting portion 2323 that side each extends over, it is solid that the first connecting portion 2322 is fixed on described first The side far from the support frame 24 of fixed arm 2311, the second connecting portion 2323 are fixed on second fixed arm 2312 The side far from the support frame 24, and be oppositely arranged the ring 2321 with the elastic arm 2313.

And the bottom wall 2422 of the skeleton interconnecting piece 242 is supported in second fixed arm 2312, to form institute State the connection of support frame 24 Yu the resilient support assemblies 23.The i.e. described bottom wall 2422 is connected to the elastic component 231.

In addition to this, the bottom wall 2422 of the skeleton interconnecting piece 242 also can connect in the second connecting portion 2323, i.e., the described bottom wall 2422 is connected to the auxiliary vibrating diaphragm 232.Or the bottom wall of described-skeleton interconnecting piece 242 2422 sandwicheds are fixed between second fixed arm 2312 and the second connecting portion 2323, i.e., the described bottom wall 2422 is fixed on Between the elastic component 231 and the auxiliary vibrating diaphragm 232.It is all feasible through these upper fixed forms.

Because the skeleton interconnecting piece 242 is located at the position of four fillets of the voice coil 22, and the resilient support assemblies 23 include two and are located at the opposite sides of the voice coil 22, at this point, the long axis two sides of the voice coil 22 then can sufficiently be used In design magnetic steel structure, to increase the volume of the magnetic circuit system 3 to improve its magnetic field performance.

Specifically, the magnetic circuit system 3 includes magnetic yoke 31, is fixed on the magnetic yoke 31 continuing with combining shown in Fig. 2-4 It main magnet steel 32 and is respectively separated and is set to 32 opposite sides of main magnet steel and forms the magnetic gap with the main magnet steel 32 The secondary magnet steel 33 of two first of 36.Each described first secondary magnet steel 33 is between the two neighboring resilient support assemblies 23.

For example, the voice coil 22 is in rectangular configuration with rounded corners, two the described first secondary magnet steel 33 are located at the voice coil 2 Long axis two sides, two resilient support assemblies 23 are located at the short axle two sides of the voice coil 22.At this point, the magnetic circuit system 3 is Form the magnetic structure of three magnet steel.The more single magnetic steel magnetic circuit structure of its driveability is stronger.

It should be noted that two first secondary magnet steel 33 can also respectively with two 23 positions of resilient support assemblies It is identical, the short axle two sides of the voice coil 22 are respectively positioned on, this is also feasible.In order to further efficiently use space, described in reinforcement The volume of magnetic circuit system 3, in present embodiment, the magnetic circuit system 3 further includes being respectively separated that be set to the main magnet steel 32 another The secondary magnet steel 34 of two second of outer opposite sides.That is, two the described first secondary magnet steel 33 and two the described second secondary magnetic Steel 34 is located at the long axis two sides and short axle two sides of the voice coil 22, or is located at the short axle two sides of the voice coil 22 With long axis two sides, thus formed five magnetic steel magnetic circuit structures.

In present embodiment, when for five magnetic steel magnetic circuit structures, the voice coil 22 is rectangular configuration with rounded corners, two institutes The long axis two sides that the first secondary magnet steel 33 is located at the voice coil 22 are stated, two the described second secondary magnet steel 34 are located at the voice coil 22 Short axle two sides, two resilient support assemblies 23 are located at the short axle two sides of the voice coil 22, and each described second Secondary magnet steel 34 is particularly located at the same elasticity between the resilient support assemblies 23 and the voice coil 22 ipsilateral with it Between second fixed arm 2312 of two of support component 23, i.e., what the two neighboring skeleton interconnecting piece 242 surrounded jointly In accommodating space.At this point, the magnetic circuit system 3 is the magnetic structure for forming five magnet steel, driveability is stronger, so that the hair The vibrating effect of acoustic device 100 is more excellent.

It should be noted that the second secondary magnet steel 34 in order to need to avoid while making full use of space as far as possible again and The interference of resilient support assemblies 23 and support frame 24, in present embodiment, the described second secondary magnet steel 34 includes magnet steel ontology 341 The magnet steel reinforcement part 342 formed is each extended over the both ends by the magnet steel ontology 341, each magnet steel reinforcement part 342 divides It does not extend between the skeleton interconnecting piece 242 and the voice coil 22.

In addition, as shown in FIG. 12 and 13, the auxiliary vibrating diaphragm 232 equipped with from its close to a side of voice coil 22 to described The recessing groove 2324 of 1 direction of frame recess, the magnet steel ontology 341 extend in the recessing groove 2324.It is also to Make the volume design of the described second secondary magnet steel 34 bigger, as far as possible to improve vibration performance.

Certainly, when the magnetic circuit system 3 is three magnetic steel magnetic circuit structure comprising two secondary magnet steel can also be upper State the structure of two second secondary magnet steel 34 in five magnetic steel magnetic circuit structures.

In order to make the magnetic line of force of the magnetic circuit system 3 is as much as possible to be cut by the voice coil 22, to form bigger drive Power, the magnetic circuit system 3 further include upper clamp plate 35, and the upper clamp plate 35 includes the fixed ring annular in shape for being fixed on frame 1 351 and extended respectively to two first secondary magnet steel 33 and two the described second secondary magnet steel 34 from the fixed ring 351 four A pole piece 352, four pole pieces 352 are stacked at two the described first secondary magnet steel 33 and two the described second secondary magnet steel respectively 34.And the pole piece 352 is matched with the shape of corresponding described first secondary magnet steel 33 or the second secondary magnet steel 34 respectively.It is described When magnetic circuit system 3 is three magnetic steel magnetic circuit structure, the pole piece 352 is then two.

Compared with prior art, in the microphone device of the utility model, the voice coil and the vibrating diaphragm and the voice coil Be interval setting with the resilient support assemblies, by be arranged include skeleton main body annular in shape and from the skeleton main body to The support frame of at least two skeleton interconnecting pieces of outer extension, make the skeleton main body be located at the vibrating diaphragm and the voice coil it Between, the skeleton interconnecting piece to by the voice coil resilient suspension below the vibrating diaphragm, the top of the skeleton interconnecting piece Wall is connect with the bottom surface of the vibrating diaphragm, its side wall is connect with the side of the voice coil, and bottom wall and the resilient support assemblies connect It connects.I.e. the structure makes the resilient support assemblies be indirectly coupled to the voice coil by the support frame, on the one hand realizes The inhibition of horizontal swing when to the voice coil vibrations improves its stability；On the other hand the resilient support assemblies are eliminated To the limitation of voice coil when being directly connected to voice coil, voice coil height is no longer limited by resilient support assemblies, microphone device whole height What can be designed is more frivolous；Eliminate the limitation of design to magnetic circuit system simultaneously, resilient support assemblies are not direct and voice coil Gluing, for magnetic circuit system without resilient support assemblies of stepping down, magnetic circuit system can realize maximized more three magnetic circuits of magnet steel or five magnetic circuits Structure effectively increases the acoustical behavior of the microphone device.

The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in Other relevant technical fields, are also included in the patent protection scope of the utility model.

Claims (24)

1. a kind of microphone device comprising frame and be individually fixed in the vibrational system of the frame and the magnetic circuit with magnetic gap System；The vibrational system includes the vibrating diaphragm for being fixed on the frame, is inserted in the magnetic gap and drives the diaphragm oscillations The voice coil of sounding and it is fixed on the frame and resilient support assemblies opposite and spaced with the vibrating diaphragm, feature exist In the vibrational system further includes support frame, and the support frame includes skeleton main body annular in shape and by the skeleton The outwardly extending at least two skeletons interconnecting piece of main body；The skeleton main body is described between the vibrating diaphragm and the voice coil Skeleton interconnecting piece to by the voice coil resilient suspension below the vibrating diaphragm；The skeleton interconnecting piece is equipped with opposite with vibrating diaphragm The side wall of roof, the bottom wall opposite with the resilient support assemblies and the connection roof and the bottom wall, the roof and The vibrating diaphragm connection, the side wall are connect with the side of the voice coil, and the bottom wall is connect with the resilient support assemblies.

2. microphone device according to claim 1, which is characterized in that the resilient support assemblies are enclosed jointly to be set to be formed in one Empty region, the voice coil are located within the scope of the hollow region far from one end of the vibrating diaphragm.

3. microphone device according to claim 1, which is characterized in that the roof and the bottom wall are located at the side The different two sides of wall.

4. microphone device according to claim 1, which is characterized in that the two neighboring skeleton interconnecting piece is spaced apart from each other simultaneously An accommodating space is surrounded jointly.

5. microphone device according to claim 1, which is characterized in that the skeleton main body includes being connected to the vibrating diaphragm First main body, the second main body for being connected to the voice coil and extend from the vibrating diaphragm to voice coil direction and to connect described first main The third main body of body and second main body.

6. microphone device according to claim 5, which is characterized in that the skeleton main body is along the diaphragm oscillations direction Orthographic projection is fallen on the voice coil.

7. microphone device according to claim 1, which is characterized in that the skeleton main body is one with the skeleton interconnecting piece Forming structure.

8. microphone device according to claim 7, which is characterized in that the skeleton main body is with the skeleton interconnecting piece Metal material is made, and the two is integrally formed through the stamping process.

9. microphone device according to claim 1, which is characterized in that the skeleton main body is point with the skeleton interconnecting piece Body structure.

10. microphone device according to claim 1, which is characterized in that the skeleton interconnecting piece includes between four and difference Every setting, skeleton interconnecting piece described in every two is one group and by skeleton main body connection.

11. microphone device according to claim 10, which is characterized in that the voice coil be in rectangular configuration with rounded corners, four A skeleton interconnecting piece is located at the position of four fillets of the voice coil.

12. microphone device according to claim 1, which is characterized in that the resilient support assemblies include two and difference Positioned at the opposite sides of the voice coil, each resilient support assemblies include elastic component and are attached at the auxiliary of the elastic component Help vibrating diaphragm；The skeleton interconnecting piece is fixed on the side far from the auxiliary vibrating diaphragm of the elastic component.

13. microphone device according to claim 12, which is characterized in that the elastic component includes being fixed on the frame First fixed arm, support is fixed on two the second fixed arms of the two neighboring skeleton interconnecting piece and by described first respectively Two elastic arms that fixed arm extends and forms a fixed connection to two second fixed arms respectively；The auxiliary vibrating diaphragm includes cross The ring of the arc-shaped structure in section, the first connecting portion and second connecting portion each extended over by the opposite sides of the ring, institute The side far from the support frame that first connecting portion is fixed on first fixed arm is stated, the second connecting portion is fixed on The side far from the support frame of second fixed arm, and it is oppositely arranged the ring with the elastic arm；The bottom Wall is supported in second fixed arm.

14. microphone device according to claim 12, which is characterized in that the elastic component includes being fixed on the frame First fixed arm, support is fixed on two the second fixed arms of the two neighboring skeleton interconnecting piece and by described first respectively Two elastic arms that fixed arm extends and forms a fixed connection to two second fixed arms respectively；The auxiliary vibrating diaphragm includes cross The ring of the arc-shaped structure in section, the first connecting portion and second connecting portion each extended over by the opposite sides of the ring, institute The side far from the support frame that first connecting portion is fixed on first fixed arm is stated, the second connecting portion is fixed on The side far from the support frame of second fixed arm, and it is oppositely arranged the ring with the elastic arm；The bottom Wall is connected to the second connecting portion.

15. microphone device according to claim 12, which is characterized in that the elastic component includes being fixed on the frame First fixed arm, support is fixed on two the second fixed arms of the two neighboring skeleton interconnecting piece and by described first respectively Two elastic arms that fixed arm extends and forms a fixed connection to two second fixed arms respectively；The auxiliary vibrating diaphragm includes cross The ring of the arc-shaped structure in section, the first connecting portion and second connecting portion each extended over by the opposite sides of the ring, institute The side far from the support frame that first connecting portion is fixed on first fixed arm is stated, the second connecting portion is fixed on The side far from the support frame of second fixed arm, and it is oppositely arranged the ring with the elastic arm；The bottom Wall sandwiched is fixed between second fixed arm and the second connecting portion.

16. microphone device according to claim 12, which is characterized in that the elastic component is flexible circuit board, the sound Circle is electrically connected with the elastic component.

17. microphone device described in 3~15 any one according to claim 1, which is characterized in that the magnetic circuit system includes magnetic Yoke, the main magnet steel for being fixed on the magnetic yoke and being respectively separated be set to the main magnet steel opposite sides and with the main magnet steel shape At two first secondary magnet steel of the magnetic gap, each described first secondary magnet steel is located between two resilient support assemblies.

18. microphone device according to claim 17, which is characterized in that the voice coil be in rectangular configuration with rounded corners, two A described first secondary magnet steel is located at the long axis two sides of the voice coil, and two resilient support assemblies are located at the short axle of the voice coil Two sides.

19. microphone device according to claim 17, which is characterized in that the magnetic circuit system further includes being respectively separated setting In two second secondary magnet steel of the main other opposite sides of magnet steel.

20. microphone device according to claim 19, which is characterized in that the voice coil be in rectangular configuration with rounded corners, two A described first secondary magnet steel is located at the long axis two sides of the voice coil, and two resilient support assemblies are located at the short axle of the voice coil Two sides, two the described second secondary magnet steel are located at the short axle two sides of the voice coil, and each described second secondary magnet steel is located at same institute It states between two second fixed arms of resilient support assemblies.

21. microphone device according to claim 20, which is characterized in that the second secondary magnet steel include magnet steel ontology and by The both ends of the magnet steel ontology each extend over the magnet steel reinforcement part to be formed, and each magnet steel reinforcement part extends respectively to an institute It states between skeleton interconnecting piece and the voice coil.

22. microphone device according to claim 21, which is characterized in that the auxiliary vibrating diaphragm is equipped with by it close to voice coil The recessing groove that one side is recessed to the frame direction, the magnet steel ontology extend in the recessing groove.

23. microphone device according to claim 22, which is characterized in that the magnetic circuit system further includes upper clamp plate, described Upper clamp plate includes being fixed on the fixed ring annular in shape of frame and from the fixed ring respectively to the described first secondary magnet steel and described Four pole pieces that second secondary magnet steel extends, four pole pieces are stacked at the described first secondary magnet steel and the second secondary magnetic respectively Steel, and the pole piece is matched with the shape of corresponding described first secondary magnet steel or the second secondary magnet steel respectively.

24. microphone device according to claim 1, which is characterized in that the quality specific gravity of the vibrating diaphragm and the voice coil is small In 1:5.