CN208924470U

CN208924470U - Microphone device

Info

Publication number: CN208924470U
Application number: CN201821622840.1U
Authority: CN
Inventors: 宋威; 张帆
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2018-09-30
Filing date: 2018-09-30
Publication date: 2019-05-31
Anticipated expiration: 2028-09-30

Abstract

The utility model provides a kind of microphone device comprising frame and is individually fixed in the vibrational system of the frame and the magnetic circuit system with magnetic gap；The vibrational system include the vibrating diaphragm for being fixed on the frame, the voice coil of the driving diaphragm oscillations sounding, be fixed on the frame and resilient support assemblies opposite and spaced with the vibrating diaphragm and with the spaced support frame of the voice coil, described support frame one end is connect with the vibrating diaphragm, and the other end is connect with the resilient support assemblies；The support frame includes four, and the voice coil is in rectangular configuration with rounded corners, and four support frames are located at four fillet positions of the voice coil.Compared with the relevant technologies, the microphone device stability of the utility model is good and acoustical behavior is excellent.

Description

Microphone device

[technical field]

The utility model relates to acoustic-electric field more particularly to a kind of microphone devices for applying to portable electronic product.

[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 the intelligent slidings such as mobile phone till now Among dynamic equipment.

The microphone device of the relevant technologies includes frame, the vibrational system for being fixed on the frame and the driving vibration The magnetic circuit system of system vibration sounding；The vibrational system includes the vibrating diaphragm for being fixed on the frame, the driving diaphragm oscillations The voice coil of sounding and and interval opposite with the vibrating diaphragm are arranged and the voice coil are supported in the resilient support group of the frame Part.

However, the vibrating diaphragm and the resilient support assemblies are individually fixed in institute in the microphone device of 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 acoustics 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 this utility model is to provide the microphone devices that a kind of stability is good and acoustical behavior is excellent.

In order to achieve the above objectives, the utility model provides a kind of microphone device comprising frame and is individually fixed in described The vibrational system of frame and magnetic circuit system with magnetic gap；The vibrational system includes the vibrating diaphragm for being fixed on the frame, drives The voice coil of the diaphragm oscillations sounding is moved, the frame is fixed on and resilient support group opposite and spaced with the vibrating diaphragm Part and with the spaced support frame of the voice coil, described support frame one end connect with the vibrating diaphragm, the other end with The resilient support assemblies connection；The support frame includes four, and the voice coil is in rectangular configuration with rounded corners, described in four Support frame is located at four fillet positions of the voice coil.

Preferably, four support frames are located at the inside of the voice coil.

Preferably, four support frames are located at the outside of the voice coil.

Preferably, side of side of the resilient support assemblies far from the vibrating diaphragm than the voice coil far from the vibrating diaphragm It is farther apart from the vibrating diaphragm.

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 arc-shaped structure of the support frame.

Preferably, the resilient support assemblies include two and are located at the opposite sides of the voice coil, each described Resilient support assemblies include the auxiliary vibrating diaphragm far from the vibrating diaphragm side that the elastic component is fixed in elastic component and fitting, described Support frame is fixed on the side close to the vibrating diaphragm of the elastic component.

Preferably, the elastic component includes the first fixed arm for being fixed on the frame, two institutes are fixed in support respectively It states two the second fixed arms of support frame and is extended simultaneously to two second fixed arms respectively from first fixed arm Two elastic arms being connect with two second fixed arms；It is described auxiliary vibrating diaphragm include the arc-shaped structure in cross section ring, by The first connecting portion and second connecting portion that the opposite sides of the ring each extends over, the first connecting portion are fixed on described The side far from the support frame of one fixed arm, two second fixed arms are fixed on the close of the second connecting portion The side of the support frame, and it is oppositely arranged the ring with the elastic arm；The support frame is fixed on described second Fixed arm.

Preferably, the elastic component is flexible circuit board.

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, two the described first secondary magnet steel are located at the long axis two sides of the voice coil, two resilient support assemblies Positioned 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, two the described first secondary magnet steel are located at the long axis two sides of the voice coil, two resilient support assemblies Positioned at the short axle two sides of the voice coil, and each described second secondary magnet steel is located at described in two of the same resilient support assemblies Between second fixed arm.

Preferably, the described second secondary magnet steel includes magnet steel ontology and each extends over shape by the long axis both ends of the magnet steel ontology At magnet steel relief portion, each magnet steel relief portion extends respectively between the corresponding support frame and the voice coil.

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

Preferably, the magnetic circuit system further includes upper clamp plate, and the upper clamp plate includes be fixed on the frame annular in shape Fixed ring and four pole pieces being extended respectively to the described first secondary magnet steel and the second secondary magnet steel from the fixed ring, four The pole piece is stacked at the described first secondary magnet steel and the second secondary magnet steel respectively.

Compared with the relevant technologies, the vibrational system of the microphone device of the utility model further includes support frame, the support Skeleton one end is connect with the vibrating diaphragm, and the other end is connect with the resilient support assemblies；The support frame includes four, institute Voice coil is stated in rectangular configuration with rounded corners, four support frames are located at four fillet positions of the voice coil.I.e. should Structure makes the resilient support assemblies and the vibrating diaphragm is connected to the support frame, and the height of the voice coil is no longer limited by The oscillation space of the resilient support assemblies, the whole height of the microphone device can design more frivolous；Simultaneously because The voice coil does not contact the resilient support assemblies, will not influence the gap between the voice coil and magnetic circuit, and magnetic circuit system can be real Now maximized more three magnetic circuits of magnet steel or five magnetic structures, finally 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 stereochemical structure decomposing schematic representation of the utility model microphone device；

Fig. 3 is the elevational schematic view of the part isometric structure of the utility model microphone device；

Fig. 4 is the cut-away view of the line A-A along Fig. 1；

Fig. 5 is the schematic perspective view of the vibrational system of the utility model microphone device；

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

Fig. 7 is the schematic perspective view of the resilient support assemblies of the utility model microphone device；

Fig. 8 is the stereochemical structure decomposing schematic representation of the resilient support assemblies of the utility model microphone device；

Fig. 9 is the schematic perspective view of the support frame 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.

It please join shown in Fig. 1-9, the utility model provides a kind of microphone device 100 comprising frame 1 is individually fixed in institute State the vibrational system 2 and magnetic circuit system 3 of frame 1.

The frame 1 is used to support the vibrational system 2 and the magnetic circuit system 3, and the magnetic circuit system 3 is for driving institute State 2 vibration sounding of vibrational system.

The vibrational system 2 includes the voice coil of the vibrating diaphragm 21 for being fixed on the frame 1, driving 21 vibration sounding of vibrating diaphragm 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 magnetic circuit system 3 has magnetic gap 36, and the voice coil 22 is inserted in the magnetic gap 36.

In present embodiment, the support frame 24 include four and arc-shaped structure, described 24 one end of support frame with The vibrating diaphragm 21 connects, and the other end is connect with the resilient support assemblies 23；The voice coil 22 is in rectangular configuration with rounded corners, Four support frames 24 are located at four fillet positions of the voice coil 22.I.e. the structure makes the resilient support group Part 23 and the vibrating diaphragm 21 are connected to the support frame 24, and the height of the voice coil 22 is no longer limited by the resilient support group The oscillation space of part 23, the whole height of the microphone device 100 can design more frivolous；Simultaneously because the voice coil 22 The resilient support assemblies 23 are not contacted, will not influence the gap between the voice coil 22 and magnetic circuit, and magnetic circuit system 3 can be realized most Three magnetic circuit of more magnet steel changed greatly or five magnetic structures finally effectively increase the acoustical behavior of the microphone device 100.

Four support frames 24 are located at the outside of the voice coil 22.Certainly, four support frames 24 are also It can be located separately the inside of the voice coil 22.Present embodiment is only located at the voice coil 22 with four support frames 24 Outside for be illustrated.

Side of the resilient support assemblies 23 far from the vibrating diaphragm 21 than the voice coil 22 far from the vibrating diaphragm 21 one Vibrating diaphragm 21 described in lateral extent is farther.The resilient support assemblies 23 and the bottom end of the voice coil 22 be not concordant under the structure.

The resilient support assemblies 23 are enclosed jointly to be set to form a hollow region 10, and the voice coil 22 is far from the vibrating diaphragm 21 One end is located in 10 range of hollow region.So that the design of voice coil 22 is not by it between the resilient support assemblies 23 Space limitation, avoids influence of the resilient support assemblies 23 to magnetic circuit.

In present embodiment, the resilient support assemblies 23 include two and are located at opposite the two of the voice coil 22 The voice coil 22 is supported in the frame by four support frames 24 respectively by side, two resilient support assemblies 23 1.The setting of double spring support component 23 forms symmetrical structure, more stable to the support effect of the voice coil 22, and anti-voice coil 22 is horizontal To swinging, effect is more excellent.

Each resilient support assemblies 23 include the separate institute that the elastic component 231 is fixed in elastic component 231 and fitting The auxiliary vibrating diaphragm 232 of 21 side of vibrating diaphragm is stated, the support frame 24 is fixed on the close vibrating diaphragm 21 of the elastic component 231 Side.The resilient support assemblies 23 are to weaken the vibrational system 2 waving in the operating condition.

Specifically, the elastic component 231 is flexible circuit board, the voice coil 22 is electrically connected with the elastic component 231.One side Face is used to provide the support to the voice coil 22, on the other hand introduces external electric signal for the voice coil 22, avoids by drawing Line is the problem of being easy broken string when the voice coil 22 introduces external electric signal, to improve its reliability.

The elastic component 231 includes the first fixed arm 2311 for being fixed on the frame 1, two institutes are fixed in support respectively It states two the second fixed arms 2312 of support frame 24 and is consolidated respectively to two described second from first fixed arm 2311 Two elastic arms 2313 that fixed arm 2312 extends and connect with two second fixed arms 2312；The auxiliary vibrating diaphragm 232 includes The ring 2321 of the arc-shaped structure in cross section, 2322 and of first connecting portion each extended over by the opposite sides of the ring 2321 Second connecting portion 2323, the first connecting portion 2322 are fixed on the separate support frame 24 of first fixed arm 2311 Side, two second fixed arms 2312 be fixed on the second connecting portion 2323 close to the support frame 24 one Side, and it is oppositely arranged the ring 2321 with the elastic arm 2313；The support frame 24 is fixed on second fixed arm 2312.The resilient support assemblies 23 do not influence magnetic gap under this kind of structure, optimize the design of magnetic circuit system, so that described The acoustical behavior of microphone device 100 is more excellent, while the setting of the resilient support assemblies 23 is convenient for the promotion vibrational system 2 Stability.

The magnetic circuit system 3 includes magnetic yoke 31, is fixed on the main magnet steel 32 of the magnetic yoke 31 and is respectively separated and be set to 32 opposite sides of main magnet steel and the two first secondary magnet steel 33 that the magnetic gap 36 is formed with the main magnet steel 32；Each institute The first secondary magnet steel 33 is stated to be located between two resilient support assemblies 23.

Voice coil 22 described in present embodiment is in rectangular configuration with rounded corners, and two the described first secondary magnet steel 33 are located at institute The long axis two sides of voice coil 22 are stated, two resilient support assemblies 23 are located at the short axle two sides of the voice coil 22.At this point, the magnetic Road system 3 is the magnetic structure for forming three magnet steel, and the more single magnetic steel magnetic circuit structure of 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 are respectively positioned on, this is also feasible.In order to further efficiently use space, reinforce the magnetic The volume of road system 3, in present embodiment, the magnetic circuit system 3 further includes being respectively separated to be set to the main magnet steel 32 in addition The secondary magnet steel 34 of two second of opposite sides；That is, two the described first secondary magnet steel 33 and two the described second secondary magnet steel 34 are located at the long axis two sides and short axle two sides of the voice coil 22, or are located at short axle two sides and the length of the voice coil 22 Axis two sides, to form five magnetic steel magnetic circuit structures.

In present embodiment, when for five magnetic steel magnetic circuit structures, two the described first secondary magnet steel 33 are located at the sound The long axis two sides of circle 22, two the described second secondary magnet steel 34 are located at the short axle two sides of the voice coil 22, two resilient support Component 23 is located at the short axle two sides of the voice coil 22, i.e., the accommodating space that the two neighboring connection wall 242 surrounds jointly It is interior, and each second secondary magnet steel 34 be located at the same resilient support assemblies 23 two second fixed arms 2312 it Between.At this point, the magnetic circuit system 3 is the magnetic structure for forming five magnet steel, driveability is stronger, so that the microphone device 100 vibrating effect 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 relief portion 342 formed, each magnet steel relief portion are each extended over the long axis both ends by the magnet steel ontology 341 342 extend respectively between the support ontology 241 of the corresponding support frame 24 and the voice coil 22.This kind of structure can Preferably to utilize magnetic circuit space.

In addition, the auxiliary vibrating diaphragm 232 is equipped with and is recessed close to a side of the voice coil 22 to 1 direction of frame from it Recessing groove 2324, the magnet steel ontology 341 extend in the recessing groove 2324, are also to make described second as far as possible The volume design of secondary magnet steel 34 is bigger, to improve vibration performance.

In order to further increase the performance of the magnetic circuit system 3, make the magnetic line of force quilt as much as possible of the magnetic circuit system 3 The voice coil 22 is cut, and to form bigger driving force magnetic circuit space, the magnetic circuit system 3 further includes upper clamp plate 35, it is described on Clamping plate 35 includes being fixed on the fixed ring 351 annular in shape of the frame 1 and from the fixed ring 351 respectively to first pair Four pole pieces 352 that magnet steel 33 and the second secondary magnet steel 34 extend, it is secondary that four pole pieces 352 are stacked at described first respectively Magnet steel 33 and the second secondary magnet steel 34, and the pole piece 352 respectively with corresponding described first secondary magnet steel 33 or described second The shape of secondary magnet steel 34 matches.

Above-described is only the embodiments of the present invention, it should be noted here that for the ordinary skill of this field For personnel, without departing from the concept of the present invention, improvement can also be made, but these belong to it is practical Novel protection scope.

Claims

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 include the vibrating diaphragm for being fixed on the frame, be fixed on the vibrating diaphragm and be inserted in the magnetic gap with It drives the voice coil of the diaphragm oscillations sounding and is fixed on the frame and elasticity opposite and spaced with the vibrating diaphragm Support component, which is characterized in that the vibrational system further includes and the spaced support frame of the voice coil, the support rib Frame one end is connect with the vibrating diaphragm, and the other end is connect with the resilient support assemblies；The support frame includes four, described Voice coil is in rectangular configuration with rounded corners, and four support frames are located at four fillet positions of the voice coil.

2. microphone device according to claim 1, which is characterized in that four support frames are located at the voice coil Inside.

3. microphone device according to claim 1, which is characterized in that four support frames are located at the voice coil Outside.

4. microphone device according to claim 1, which is characterized in that the resilient support assemblies far from the vibrating diaphragm one Side is more farther than vibrating diaphragm described in a lateral extent of the voice coil far from the vibrating diaphragm.

5. 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.

6. microphone device according to claim 1, which is characterized in that the arc-shaped structure of support frame.

7. microphone device according to claim 1, which is characterized in that the resilient support assemblies include two and difference position In the opposite sides of the voice coil, each resilient support assemblies include that the remote of the elastic component is fixed in elastic component and fitting Auxiliary vibrating diaphragm from the vibrating diaphragm side, the support frame are fixed on the side close to the vibrating diaphragm of the elastic component.

8. microphone device according to claim 7, which is characterized in that the elastic component includes be fixed on the frame One fixed arm, respectively support are fixed on two the second fixed arms of two support frames and by first fixed arms point Two elastic arms for not extending and being connect with two second fixed arms to two second fixed arms；The auxiliary vibrating diaphragm packet The ring for including the arc-shaped structure in cross section, the first connecting portion and the second connection each extended over by the opposite sides of the ring Portion, the first connecting portion are fixed on the side far from the support frame of first fixed arm, and two described second solid Fixed arm is fixed on the side close to the support frame of the second connecting portion, and makes the ring is opposite with the elastic arm to set It sets；The support frame is fixed on second fixed arm.

9. microphone device according to claim 7, which is characterized in that the elastic component is flexible circuit board.

10. microphone device according to claim 8, which is characterized in that the magnetic circuit system include magnetic yoke, be fixed on it is described It the main magnet steel of magnetic yoke and is respectively separated and is set to the main magnet steel opposite sides and forms the magnetic gap with the main magnet steel Two first secondary magnet steel, each described first secondary magnet steel is located between two resilient support assemblies.

11. microphone device according to claim 10, which is characterized in that two the described first secondary magnet steel are located at the voice coil Long axis two sides, two resilient support assemblies are located at the short axle two sides of the voice coil.

12. microphone device according to claim 10, 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.

13. microphone device according to claim 12, which is characterized in that two the described first secondary magnet steel are located at the voice coil Long axis two sides, two resilient support assemblies are located at the short axle two sides of the voice coil, and each described second secondary magnet steel position Between two second fixed arms of the same resilient support assemblies.

14. microphone device according to claim 13, which is characterized in that the second secondary magnet steel include magnet steel ontology and by The long axis both ends of the magnet steel ontology each extend over the magnet steel relief portion to be formed, and each magnet steel relief portion extends respectively to pair Between the support frame and the voice coil answered.

15. microphone device according to claim 14, which is characterized in that the auxiliary vibrating diaphragm is equipped with by it close to the sound The recessing groove that one side of circle is recessed to the frame direction, the magnet steel ontology extend in the recessing groove.

16. microphone device according to claim 15, which is characterized in that the magnetic circuit system further includes upper clamp plate, described Upper clamp plate include be fixed on the frame fixed ring annular in shape and from the fixed ring respectively to the described first secondary magnet steel and Four pole pieces that described second secondary magnet steel extends, four pole pieces are stacked at the described first secondary magnet steel and second pair respectively Magnet steel.