CN109348373A - Microphone device - Google Patents
Microphone device Download PDFInfo
- Publication number
- CN109348373A CN109348373A CN201811162980.XA CN201811162980A CN109348373A CN 109348373 A CN109348373 A CN 109348373A CN 201811162980 A CN201811162980 A CN 201811162980A CN 109348373 A CN109348373 A CN 109348373A
- Authority
- CN
- China
- Prior art keywords
- voice coil
- magnet steel
- fixed
- vibrating diaphragm
- microphone device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
Abstract
The present invention provides a kind of microphone devices comprising frame, vibrational system, the magnetic circuit system with magnetic gap and four support frames being spaced apart from each other；The vibrational system includes vibrating diaphragm, the voice coil for being inserted in the magnetic gap and is fixed on the frame and resilient support assemblies opposite and spaced with the vibrating diaphragm, the voice coil is in rectangular configuration with rounded corners, and four support frames are located at the position of four fillets of the voice coil；The resilient support assemblies are fixed in one end of each support frame, and the other end is fixed on one end far from the vibrating diaphragm of the voice coil, are used for the voice coil resilient suspension below the vibrating diaphragm.Compared with the relevant technologies, the acoustical behavior of microphone device of the invention is excellent and sense of hearing is preferable.
Description
[technical field]
The present invention relates to electroacoustic conversion art 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 Intelligent mobile equipment till now
Among.
The microphone device of the relevant technologies includes frame, the vibrational system for being fixed on frame and the driving vibrational system
The magnetic circuit system of vibration sounding, the vibrational system include the sound of the vibrating diaphragm for being fixed on the frame, the driving diaphragm oscillations
Circle and resilient support assemblies；The magnetic circuit system includes the magnetic yoke for being fixed on the frame and the magnetic for being fixed on the magnetic yoke
Steel, the magnet steel include main magnet steel and are arranged around the main magnet steel and are spaced the secondary magnet steel to form magnetic gap；The voice coil is inserted
If being suspended in the magnetic gap, described voice coil one end, which is sticked, is fixed on the vibrating diaphragm, and the other end is fixed on the elasticity branch
Support component.
However, the vibrating diaphragm and the resilient support assemblies are individually fixed in the sound in the microphone device of the relevant technologies
The opposite end of circle, although the horizontal swing when resilient support assemblies can effectively prevent the voice coil vibrations, it is directly
The structure connecting with voice coil causes the design of the voice coil to be restricted, due under voice coil height dimension certain situation, in order to protect
Card vibrate up and down space, cause the total height of the microphone device can not be more frivolous, in addition, and the magnetic circuit system volume
Also it is limited, the resilient support assemblies are set between the voice coil and the magnetic circuit system, are also affected the magnetic gap, are led
Cause magnetic circuit that can not maximize, so that the acoustical behavior of the microphone device can not be made more optimized.
Therefore, it is really necessary to provide a kind of new microphone device solution above-mentioned technical problem.
[summary of the invention]
The preferable microphone device of excellent and sense of hearing the purpose of the present invention is to provide a kind of acoustical behavior.
In order to achieve the above objectives, the present invention provides a kind of microphone device comprising frame is individually fixed in the frame
Vibrational system and magnetic circuit system and four support frames being spaced apart from each other with magnetic gap；The vibrational system includes fixing
In the frame vibrating diaphragm, be fixed on the vibrating diaphragm and be inserted in the magnetic gap to drive the voice coil of the diaphragm oscillations sounding
And the frame and resilient support assemblies opposite and spaced with the vibrating diaphragm are fixed on, the voice coil is in rounded corners
Rectangular configuration, four support frames are located at the position of four fillets of the voice coil；Each support frame
The resilient support assemblies are fixed in one end, and the other end is fixed on one end far from the vibrating diaphragm of the voice coil, and being used for will
The voice coil resilient suspension is below the vibrating diaphragm.
More preferably, the resilient support assemblies, which are enclosed, sets to form a hollow region, the one end of the voice coil far from the vibrating diaphragm
Within the scope of the hollow region.
More preferably, the two neighboring support frame is spaced apart from each other and surrounds an accommodating space jointly.
More preferably, the resilient support assemblies include two, and the elasticity is respectively arranged in the opposite sides of the voice coil
Support component, and the resilient support assemblies and the voice coil interval are arranged；Each described resilient support assemblies passes through respectively
Two support frames are connect with the voice coil.
More preferably, the support frame include with the spaced frame body of the voice coil, from the frame body to
Far from the vibrating diaphragm or close to the skeleton wall extension of the direction of vibrating diaphragm bending extension and by the remote of the skeleton wall extension
The skeleton interconnecting piece that one end from the frame body extends to the close voice coil direction；The frame body and the elasticity
Support component connection, the skeleton interconnecting piece are connect with the voice coil.
More preferably, the resilient support assemblies include elastic component and the auxiliary vibrating diaphragm for being attached at the elastic component, described
Auxiliary vibrating diaphragm is fixedly connected with the support frame.
More preferably, the elastic component includes the first fixed arm for being fixed on the frame, supports and be fixed on the support rib
Second fixed arm of frame and extends from first fixed arm to second fixed arm and form the elastic arm of connection；It is described auxiliary
Help vibrating diaphragm include the arc-shaped structure in cross section ring, from the outwardly extending first connecting portion of the ring and from the ring to
The second connecting portion of interior extension, the first connecting portion are fixed on first fixed arm, the second connecting portion and described
The side far from the vibrating diaphragm of two fixed arms is fixed, and is oppositely arranged the ring with the elastic arm；The frame body
It is fixed on the side far from second fixed arm of the second connecting portion.
More preferably, second fixed arm is fallen along the direction of vibration of the vertical vibrating diaphragm to the orthographic projection in the voice coil direction
On the voice coil.
More preferably, the elastic component is flexible circuit board.
More 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 first secondary magnet steel that the magnetic gap is formed with the main magnet steel, each described first secondary magnet steel
Between the two neighboring resilient support assemblies.
More 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.
More preferably, the magnetic circuit system further includes being respectively separated the second pair for being set to the other opposite sides of main magnet steel
Magnet steel.
More preferably, two the described first secondary magnet steel are located at the long axis two sides of the voice coil, two the described second secondary magnet steel positions
In the short axle two sides of the voice coil, 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 between two second fixed arms of the same resilient support assemblies.
More preferably, the described second secondary magnet steel include magnet steel ontology and by the magnet steel ontology close to the voice coil side two
End each extends over the magnet steel reinforcement part to be formed, and the position that the support frame corresponds to the magnet steel reinforcement part is equipped with the magnetic of stepping down
The resigning portion of steel reinforcement part.
More preferably, the auxiliary vibrating diaphragm is equipped with by it close to a laterally closer frame direction concave shape of the voice coil
At recessing groove, the magnet steel ontology extends in the recessing groove.
More 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 the pole piece that is extended respectively to the described first secondary magnet steel and the second secondary magnet steel from the fixed ring, each described the
Be equipped with pole piece on one secondary magnet steel and each described second secondary magnet steel, and the pole piece respectively with corresponding described first secondary magnet steel or
The shape matching of described second secondary magnet steel.
Compared with the relevant technologies, in microphone device of the invention, the voice coil is connect with the vibrating diaphragm, while passing through setting
Four support frames being spaced apart from each other, four support frames are located at the position of four fillets of the voice coil；And make
The resilient support assemblies are fixed in one end of the support frame, and the other end is fixed on the separate vibrating diaphragm of the voice coil
One end, for by the voice coil resilient suspension below the vibrating diaphragm.I.e. the structure passes through the resilient support assemblies
The support frame is indirectly coupled to the one end of choosing from the vibrating diaphragm of the voice coil, when on the one hand realizing to the voice coil vibrations
Horizontal swing inhibition, improve its stability；On the other hand the resilient support assemblies are eliminated and when voice coil is directly connected to
Limitation to voice coil, voice coil height are no longer limited by resilient support assemblies, and microphone device whole height can design more light
It is thin；The support frame is set to the fillet position of voice coil, realizes and accommodates more magnet steel, and is eliminated simultaneously to magnetic circuit system
Design limitation, resilient support assemblies are not direct glued with voice coil bottom, and magnetic circuit system is without resilient support assemblies of stepping down, magnetic
Road system can realize maximized more three magnetic circuits of magnet steel or five magnetic structures, effectively increase the acoustics of the microphone device
Energy.
[Detailed description of the invention]
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is the schematic perspective view of microphone device of the present invention；
Fig. 2 is the part isometric structural exploded view of microphone device of the present invention；
Fig. 3 is the partial enlargement diagram of part shown in B in Fig. 3；
Fig. 4 is the line A-A cross-sectional view along Fig. 1；
Fig. 5 is the partial enlargement diagram of part shown in C in Fig. 4；
The top view of the part-structure of Fig. 6 microphone device of the present invention；
Fig. 7 is the schematic perspective view of the support frame of microphone device of the present invention；
Fig. 8 is the stereochemical structure exploded view of the magnetic circuit system of microphone device of the present invention；
Fig. 9 is the schematic perspective view of the resilient support assemblies of microphone device of the present invention；
Figure 10 is the stereochemical structure decomposing schematic representation of the resilient support assemblies of microphone device of the present invention；
Figure 11 is the resilient support assemblies and the second secondary alinco assembled schematic diagram of microphone device of the present invention.
[specific embodiment]
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1-11, the present invention provides a kind of microphone device 100 comprising frame 1, vibrational system 2, magnetic circuit
System 3 and support frame 4.The magnetic circuit system 3 drives 2 vibration sounding of vibrational system, and the magnetic circuit system 3 has magnetic
Gap 30.
The frame 1 is for fixing the vibrational system 2, the magnetic circuit system 3 and the support frame 4.
The vibrational system 2 is fixed on the frame 1 and is arranged.In the present embodiment, the vibrational system 2 includes vibrating diaphragm
21, voice coil 22 and resilient support assemblies 23.
The vibrating diaphragm 21 is fixed on the frame 1.
The voice coil 22 is fixed on the vibrating diaphragm 21.The voice coil 22 is inserted in the magnetic gap 30 to drive the vibrating diaphragm
21 vibration soundings.
The resilient support assemblies 23 are fixed on the frame 1.The resilient support assemblies 23 are opposite with the vibrating diaphragm 21
And interval setting.In the present embodiment, the resilient support assemblies 23 include two, and the opposite sides of the voice coil 22 is respectively set
The resilient support assemblies 23 are set, and the resilient support assemblies 23 and the voice coil 22 interval are arranged；Described in each
Resilient support assemblies 23 are connect by two support frames 4 with the voice coil 22 respectively.That is, two elasticity
Support component 23, which is located at the opposite sides of the voice coil 22 and is spaced with the voice coil 22, to be arranged.Two resilient support
The setting of component 23 forms symmetrical structure, more stable to the support effect of the voice coil 22, and anti-voice coil 22 swings laterally effect more
It is excellent.The resilient support assemblies 23, which are enclosed, to be set to form a hollow region 10, and the voice coil 22 is located at far from one end of the vibrating diaphragm 21
In 10 range of hollow region and suspension is formed, so that the voice coil 22 can float up and down without by design limitation.
Wherein, each described resilient support assemblies 23 is respectively by two support frames 4 by the voice coil 22
It supports in the frame 1, on the one hand for reinforcing the vibrating effect of the vibrating diaphragm 21, improves the acoustics of the microphone device 100
Can, on the other hand for balancing waving for the vibrational system 2, improve the stability of the microphone device 100.
Specifically, the resilient support assemblies 23 include elastic component 231 and the auxiliary vibration for being attached at the elastic component 231
Film 232.
The elastic component 231 includes the first fixed arm 2311 for being fixed on the frame 1, supports and be fixed on the support rib
Second fixed arm 2312 of frame 4 and extends from first fixed arm 2311 to second fixed arm 2312 and form connection
Two elastic arms 2313.In the present embodiment, the two sides of first fixed arm 2311 are equipped with the elastic arm 2313
With second fixed arm 2312, i.e., in the side of 22 short axle of voice coil, two second fixations being oppositely arranged
Arm 2312 connects two elastic arms 2313, the two described elastic arms 2313 connect first fixed arm 2311 jointly.
The auxiliary vibrating diaphragm 232 is fixedly connected with the support frame 4.The auxiliary vibrating diaphragm 232 includes that cross section is in arc
The ring 2321 of shape structure inwardly prolongs by the outwardly extending first connecting portion 2322 of the ring 2321 and by the ring 2321
The second connecting portion 2323 and recessing groove 2324 stretched.The first connecting portion 2322 is fixed on first fixed arm 2311,
The side far from the vibrating diaphragm 21 of the second connecting portion 2323 and second fixed arm 2312 is fixed, and makes the ring
2321 are oppositely arranged with the elastic arm 2313.The auxiliary vibrating diaphragm 232 is made of high molecular material, for example, for silica gel, rubber,
At least one of high molecular materials such as PEEK, PEL and TPU are made.Certainly, the material of the auxiliary vibrating diaphragm 232 is made not
It is limited to this.
More preferably, second fixed arm 2312 is along the direction of vibration of the vertical vibrating diaphragm 21 to 22 direction of voice coil
Orthographic projection is fallen on the voice coil 22.That is, the resilient support assemblies 23 are bonded fixed position with the support frame 4
It sets than the voice coil 22 to be bonded with the support frame 4 and fixed is located closer to the vibrating diaphragm 21.The structure is conducive to described
22 height of voice coil does not have to be limited to the resilient support assemblies 23, and 100 height of microphone device can design more frivolous.
In the present embodiment, the elastic component 231 is flexible circuit board.The elastic component 231 and 22 electricity of voice coil
Connection.On the one hand for improving the oscillation intensity and balance of the vibrational system 2, inhibit to wave, be on the other hand the voice coil
22 lead to connection external power supply, avoid the risk that voice coil leads are easily broken off when voice coil lead structure draws power supply.
The recessing groove 2324 is by the auxiliary vibrating diaphragm 232 close to laterally closer 1 side of frame of the voice coil 22
It is formed to recess.The recessing groove 2324 is used to cooperate the design of the magnetic circuit system, increases magnet steel area.
The magnetic circuit system 3 is fixed on the frame 1 and is arranged.In the present embodiment, the magnetic circuit system 3 includes magnetic yoke
31, be fixed on the main magnet steel 32 of the magnetic yoke 31 and being respectively separated be set to 32 opposite sides of main magnet steel and with the master
Magnet steel 32 forms the first secondary magnet steel 33 of the magnetic gap 30.Each described first secondary magnet steel 33 is located at the two neighboring elasticity
Between support component 23.
For example, the voice coil 22 is in rectangular configuration with rounded corners, the first secondary magnet steel 33 includes two, two described the
One secondary magnet steel 33 is located at the long axis two sides of the voice coil 22.Two resilient support assemblies 23 are located at the short axle of the voice coil 2
Two sides.At this point, the magnetic circuit system 3 is the magnetic structure for forming 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, reinforce the volume of the magnetic circuit system 3, in present embodiment, the magnetic circuit
System 3 further includes being respectively separated the second secondary magnet steel 34 for being set to the other opposite sides of the main magnet steel 32.That is, two
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 the short axle two sides and long axis two sides of the voice coil 22 are located at, to form five magnetic steel magnetic circuit structures.
In present embodiment, when for five magnetic steel magnetic circuit structures, the voice coil 22 is short shape structure 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, the two neighboring support frame 4 is spaced apart from each other and encloses jointly
At an accommodating space 40.At this point, the magnetic circuit system 3 is the magnetic structure for forming five magnet steel, driveability is stronger, so that institute
The vibrating effect for stating microphone 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 the resilient support assemblies 23 and the support frame 4, in the present embodiment, the described second secondary magnet steel 34 includes magnetic
Steel ontology 341 and the magnet steel reinforcement part formed is each extended over close to the both ends of 22 side of voice coil by the magnet steel ontology 341
342, the position of the corresponding magnet steel reinforcement part 342 of the support frame 4 is equipped with the resigning portion for the magnet steel reinforcement part 342 of stepping down
44.Each magnet steel reinforcement part 342 extend respectively to a support frame 4 the resigning portion 44 and the voice coil 22
Between.The magnet steel ontology 341 extends in the recessing groove 2324, which increases the area of magnet steel, improves the hair
The acoustics index of acoustic device 100, to keep the acoustical behavior of the microphone device 100 more excellent.
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 further increase the performance of magnetic circuit system 3, keep the magnetic line of force of the magnetic circuit system 3 as much as possible described
Voice coil 22 is cut, and to form bigger driving force, the magnetic circuit system 3 further includes upper clamp plate 35, when the magnetic circuit system 3 is five
When magnetic steel magnetic circuit structure, the upper clamp plate 35 includes being fixed on the fixed ring 351 annular in shape of the frame 1 and by the fixation
The pole piece 352 that ring 351 extends to the described first secondary magnet steel 33 and the second secondary magnet steel 34 respectively, each described first secondary magnet steel 33
Be equipped with pole piece 352 on each second secondary magnet steel 34, and the pole piece 352 respectively with corresponding described first secondary magnet steel 33
Or the shape matching of the second pair magnet steel 34.When the magnetic circuit system 3 is three magnetic steel magnetic circuit structure, the pole piece 352 is then
Two.
The support frame 4 is four and is spaced apart from each other setting.Four support frames 4 are located at the voice coil 22
Four fillets position；The resilient support assemblies 23 are fixed in one end of each support frame 4, and the other end is fixed
In the one end of the voice coil 22 far from the vibrating diaphragm 21, to by 22 resilient suspension of voice coil in 21 lower section of vibrating diaphragm.
The structure makes the resilient support assemblies 23 are indirect to connect with the voice coil 22, but is realized by the support frame 4
It is indirectly connected with.On the one hand the indirect connection structure realizes the horizontal swing to the voice coil 22 by the resilient support assemblies 23
Effective inhibition, improve the reliability and stability of the microphone device 100, on the other hand, resilient support assemblies 23 with it is described
Voice coil 22 is indirect to be connected, and releases the structure design of the voice coil 22, position can be along the direction of vibration of the vibrating diaphragm 21
Lower floating, voice coil height are no longer limited by resilient support assemblies 23, and microphone device whole height can design more frivolous；Together
When release the structure design of the magnetic circuit system 3, the resilient support assemblies 23 are not direct glued with 22 bottom of voice coil, effectively
The interference of magnetic circuit system 3 Yu the resilient support assemblies 23 is avoided, magnetic circuit system 3 is without resilient support assemblies 23 of stepping down, magnetic
Road system can realize maximization structure, effectively increase the acoustical behavior of the microphone device.
Specifically, the support frame 4 includes with the spaced frame body 41 of the voice coil 22, by the skeleton sheet
Body 41 is to far from the vibrating diaphragm 21 or close to the skeleton wall extension 42 of the direction of the vibrating diaphragm 21 bending extension and by the bone
The skeleton interconnecting piece 43 that one end far from the frame body 41 of frame wall extension 42 extends to close 22 direction of voice coil.By
The frame body 41, the skeleton wall extension 42 and the skeleton interconnecting piece 43 are in step structure, which preferably keeps away
Exempt from the interference of the resilient support assemblies 23 and the magnetic circuit system 3, and to discharge bigger space to design magnetic circuit system
3.The frame body 41 is connect with the resilient support assemblies 23, and the skeleton interconnecting piece 43 is connect with the voice coil 22.Its
In, the frame body 41 is fixed on the side far from second fixed arm 2312 of the second connecting portion 2323.To
It realizes and the voice coil 23 is connected to the frame 1, on the one hand strengthen the vibration efficiency of the auxiliary vibrating diaphragm 232, improvement sound
Performance is learned, on the other hand reinforces the lateral stiffness of the vibrational system 2, the active balance vibration and sway of the vibrational system 2,
Especially lateral oscillation, to improve the unfailing performance of the microphone device 100.
In present embodiment, it is illustrated so that the voice coil 22 is in rectangular configuration with rounded corners as an example, two elasticity
Support component 23 is located at the short axle two sides of the voice coil 22.The skeleton interconnecting piece of two of the same support frame 4
42 are individually fixed in the position of the two neighboring fillet of the voice coil 22.The two neighboring support frame 4 is spaced apart from each other and is total to
With an accommodating space 40 is surrounded, the adjacent support frame 4 said herein includes adjacent two of the short axle of the voice coil 22
Or adjacent two of long axis of the voice coil 22；The accommodating space 40 is for accommodating the described first secondary magnet steel 33 or described second
Secondary magnet steel 34.At this point, the long axis two sides of the voice coil 22 can then be sufficiently used for design magnetic steel structure, to increase the magnetic circuit system
The volume of system 3 is to improve its magnetic field performance.
Compared with the relevant technologies, in microphone device of the invention, the voice coil is connect with the vibrating diaphragm, while passing through setting
Four support frames being spaced apart from each other, four support frames are located at the position of four fillets of the voice coil；And make
The resilient support assemblies are fixed in one end of the support frame, and the other end is fixed on the separate vibrating diaphragm of the voice coil
One end, for by the voice coil resilient suspension below the vibrating diaphragm.I.e. the structure passes through the resilient support assemblies
The support frame is indirectly coupled to the one end of choosing from the vibrating diaphragm of the voice coil, when on the one hand realizing to the voice coil vibrations
Horizontal swing inhibition, improve its stability；On the other hand the resilient support assemblies are eliminated and when voice coil is directly connected to
Limitation to voice coil, voice coil height are no longer limited by resilient support assemblies, and microphone device whole height can design more light
It is thin；The support frame is set to the fillet position of voice coil, realizes and accommodates more magnet steel, and is eliminated simultaneously to magnetic circuit system
Design limitation, resilient support assemblies are not direct glued with voice coil bottom, and magnetic circuit system is without resilient support assemblies of stepping down, magnetic
Road system can realize maximized more three magnetic circuits of magnet steel or five magnetic structures, effectively increase the acoustics of the microphone device
Energy.
Above-described is only embodiments of the present invention, it should be noted here that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, improvement can also be made, but these belong to protection model of the invention
It encloses.
Claims (16)
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, the voice coil are in rectangular configuration with rounded corners, which is characterized in that the microphone device further includes four and is spaced apart from each other
Support frame, four support frames are located at the position of four fillets of the voice coil；Each support frame
One end be fixed on the resilient support assemblies, the other end is fixed on one end far from the vibrating diaphragm of the voice coil, to
By the voice coil resilient suspension below the vibrating diaphragm.
2. microphone device according to claim 1, which is characterized in that the resilient support assemblies, which are enclosed, to be set to form a hollow area
Domain, 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 two neighboring support frame is spaced apart from each other and is total to
It is same to surround an accommodating space.
4. microphone device according to claim 1, which is characterized in that the resilient support assemblies include two, the sound
The resilient support assemblies are respectively arranged in the opposite sides of circle, and the resilient support assemblies and the voice coil interval are arranged；
Each described resilient support assemblies passes through two support frames respectively and connect with the voice coil.
5. microphone device according to claim 4, which is characterized in that the support frame includes setting with the voice coil interval
The frame body set is prolonged from the frame body to far from the vibrating diaphragm or close to the skeleton that the bending of the direction of the vibrating diaphragm extends
The skeleton stretching wall and extending from one end far from the frame body of the skeleton wall extension to the close voice coil direction
Interconnecting piece；The frame body is connect with the resilient support assemblies, and the skeleton interconnecting piece is connect with the voice coil.
6. microphone device according to claim 5, which is characterized in that the resilient support assemblies include elastic component and patch
Set on the auxiliary vibrating diaphragm of the elastic component, the auxiliary vibrating diaphragm is fixedly connected with the support frame.
7. microphone device according to claim 6, which is characterized in that the elastic component includes be fixed on the frame
One fixed arm, support are fixed on the second fixed arm of the support frame and are fixed from first fixed arm to described second
Arm extends and forms the elastic arm of connection；The auxiliary vibrating diaphragm includes the ring, outside by the ring of the arc-shaped structure in cross section
The first connecting portion of extension and the second connecting portion to be extended internally by the ring, the first connecting portion are fixed on described first
Fixed arm, the second connecting portion and second fixed arm are fixed far from the side of the vibrating diaphragm, and make the ring with
The elastic arm is oppositely arranged；The frame body is fixed on the side far from second fixed arm of the second connecting portion.
8. microphone device according to claim 7, which is characterized in that vibration of second fixed arm along the vertical vibrating diaphragm
Dynamic direction is fallen on the voice coil to the orthographic projection in the voice coil direction.
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 7, 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
The first secondary magnet steel, each described first secondary magnet steel is between the two neighboring 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 the 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 two the described second secondary magnet steel are located at institute
State the short axle two sides of voice coil, and each described second secondary magnet steel is located at two described second of the same resilient support assemblies and consolidates
Between fixed arm.
14. microphone device according to claim 13, which is characterized in that the second secondary magnet steel include magnet steel ontology and by
The magnet steel ontology each extends over the magnet steel reinforcement part to be formed close to the both ends of the voice coil side, and the support frame corresponds to institute
The position for stating magnet steel reinforcement part is equipped with the resigning portion for the magnet steel reinforcement part of stepping down.
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 one laterally closer frame direction of circle is recessed the recessing groove to be formed, and the magnet steel ontology extends in the recessing groove.
16. microphone device according to claim 14, 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
Pole piece, and institute are equipped on the pole piece that described second secondary magnet steel extends, each described first secondary magnet steel and each described second secondary magnet steel
Pole piece is stated to match with the shape of corresponding described first secondary magnet steel or the second secondary magnet steel respectively.
Priority Applications (1)
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