CN109121051A - Microphone device - Google Patents

Microphone device Download PDF

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Publication number
CN109121051A
CN109121051A CN201810919805.4A CN201810919805A CN109121051A CN 109121051 A CN109121051 A CN 109121051A CN 201810919805 A CN201810919805 A CN 201810919805A CN 109121051 A CN109121051 A CN 109121051A
Authority
CN
China
Prior art keywords
microphone
voice coil
fixed
frame
sounding
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.)
Pending
Application number
CN201810919805.4A
Other languages
Chinese (zh)
Inventor
宋威
张帆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Technologies Pte Ltd
Original Assignee
AAC Technologies Pte Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AAC Technologies Pte Ltd filed Critical AAC Technologies Pte Ltd
Priority to CN201810919805.4A priority Critical patent/CN109121051A/en
Publication of CN109121051A publication Critical patent/CN109121051A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06Loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00Loudspeakers
    • H04R2400/11Aspects regarding the frame of loudspeaker transducers

Abstract

The present invention discloses a kind of microphone device comprising frame, vibrational system, magnetic circuit system and elastic supporting member for supporting optical member;The vibrational system includes vibrating diaphragm and voice coil;The magnetic circuit system includes magnetic bowl and is spaced the magnet steel to form magnetic gap with the magnetic bowl;The voice coil is plugged and is suspended in the magnetic gap, and the elastic supporting member for supporting optical member includes the first wall, the second wall, elastic wall and the fracture for being opened in second wall and cutting off second wall;The vibrating diaphragm is attached at the elastic supporting member for supporting optical member and is fixed on the frame by the elastic supporting member for supporting optical member, and the voice coil is fixed on the side far from the vibrating diaphragm of second wall and part covers the fracture;The vibrating diaphragm, the voice coil and the magnet steel surround sounding inner cavity jointly, and the sounding inner cavity is in communication with the outside by the fracture.Compared with the relevant technologies, microphone device acoustical behavior of the invention is more excellent.

Description

Microphone device
[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 Enclose and be attached at the top dome of the vibrating diaphragm;The magnetic circuit system include magnetic bowl and be contained in the magnetic bowl and with the magnetic bowl-type At the magnet steel of magnetic gap, the voice coil, which plugs, to be suspended in the magnetic gap.
However, in the microphone device of the relevant technologies, the air for the cavity that the vibrating diaphragm, the voice coil and the magnet steel surround It is only capable of going out by the clearance leakage between voice coil and magnet steel, to balance acoustic pressure.But with the miniature development of microphone device and precision Development, which can not allow the smooth air of inside cavity to leak out, to affect the acoustical behavior of microphone device.
Therefore, it is really necessary to provide a kind of new microphone device solution above-mentioned technical problem.
[summary of the invention]
The purpose of the present invention is overcoming above-mentioned technical problem, a kind of acoustical behavior more preferably microphone device is provided.
In order to achieve the above objectives, the present invention provides a kind of microphone device comprising frame, the vibration for being fixed on the frame System and the magnetic circuit system for driving the vibrational system sounding;The vibrational system includes being fixed on vibrating diaphragm and the drive of the frame Move the voice coil of the diaphragm oscillations sounding;The magnetic circuit system includes being fixed on the magnetic bowl of the frame and being contained in the magnetic bowl It is interior and the magnet steel to form magnetic gap is set with magnetic bowl interval;The voice coil is plugged and is suspended in the magnetic gap, described Microphone device further includes the elastic supporting member for supporting optical member for being fixed on the frame, the elastic supporting member for supporting optical member include the first wall annular in shape, Every the second wall annular in shape, connection first wall and second wall being set on the inside of first wall elastic wall and The fracture for being opened in second wall and cutting off second wall;The vibrating diaphragm is attached at the elastic supporting member for supporting optical member and passes through institute It states elastic supporting member for supporting optical member and is fixed on the frame, the voice coil is fixed on the side far from the vibrating diaphragm of second wall and part Cover the fracture;The vibrating diaphragm, the voice coil and the magnet steel surround sounding inner cavity jointly, and the fracture is by the sounding Inner cavity is in communication with the outside.
Preferably, the fracture includes at least two and is spaced apart from each other setting.
Preferably, second wall be in rectangle comprising two be oppositely arranged long side, two short sides being oppositely arranged and four A corner, two fractures are opened in two long sides of second wall respectively, and non-conterminous respectively close to two The corner.
Preferably, two fractures being equidistant to immediate two corners.
Preferably, the elastic supporting member for supporting optical member is the flexible circuit board being electrically connected with the voice coil.
Preferably, the magnetic circuit system further includes folding to set the pole piece for being fixed on the magnet steel, and the pole piece is contained in described It is intracavitary in sounding.
Compared with prior art, in microphone device of the invention, the vibrating diaphragm is fixed on by the elastic supporting member for supporting optical member The frame, the voice coil, which is fixed on second wall of the elastic supporting member for supporting optical member and plugs, to be suspended in magnetic gap, so that institute It states vibrating diaphragm, the voice coil and the magnet steel and surrounds sounding inner cavity jointly;It is described disconnected by being equipped in the elastic supporting member for supporting optical member Mouthful, and the Voice coil portions is made to cover the fracture, so that the sounding inner cavity is in communication with the outside by the fracture.It is above-mentioned Structure leak out the air acoustic pressure of the sounding inner cavity can not only by the magnetic gap between the voice coil and the magnet steel, It can also be leaked out simultaneously by the fracture, so that the gas pressure leak of the sounding inner cavity is more smooth, effectively improve institute State the acoustical behavior of microphone device.
[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 line A-A cross-sectional view along Fig. 1;
Fig. 4 is the enlarged drawing of part shown in B in Fig. 3;
Fig. 5 is the schematic perspective view of the elastic supporting member for supporting optical member 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. 1-2, the present invention provides a kind of microphone device 100 comprising frame 1, vibrational system 2, magnetic circuit System 3 and elastic supporting member for supporting optical member 4.
The frame 1 is for fixing the vibrational system 2, the magnetic circuit system 3 and the elastic supporting member for supporting optical member 4.
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 It 22 and is sticked and is fixed on the top dome 23 of the vibrating diaphragm 21.
Incorporated by reference to shown in Fig. 3-4, specifically, the vibrating diaphragm 21 includes vibration section 211, by the periphery of the vibration section 211 Outwardly extending ring portion 212 extends from the ring portion 212 to 1 direction of frame and is fixed on the fixation of the frame 1 Portion 213.
The voice coil 22 is fixed on the side far from the vibrating diaphragm 21 of the elastic supporting member for supporting optical member 4.
The top dome 23, which is sticked, is fixed on the side far from the magnetic circuit system 3 of the vibration section 211, for increasing The rigidity for stating vibration section 211, for improving the high-frequency acoustic performance of the microphone device 100.The top dome 23, which is sticked, to be fixed on The side far from the magnetic circuit system 3 of the vibrating diaphragm 21.Its fixed form is unlimited, for example, the top dome 23 passes through gluing side The vibrating diaphragm 21 is fixed in formula fitting.
The magnetic circuit system 3 drives 2 vibration sounding of vibrational system.The magnetic circuit system 3 includes being fixed on the basin The magnetic bowl 31 of frame 1 and the magnet steel 32 for being contained in the magnetic bowl 31 and being formed with the setting of the magnetic bowl 31 interval magnetic gap 10.Institute Voice coil 22 is stated to plug and be suspended in the magnetic gap 10.
Certainly, the magnetic circuit system 3 further includes folding to set the pole piece 33 for being fixed on the magnet steel 32.The pole piece 33 is for being 32 magnetic conduction of magnet steel, reduces the outflow of the magnetic line of force, effectively improves the driving force of the magnetic circuit system 3.
Incorporated by reference to shown in Fig. 5, the elastic supporting member for supporting optical member 4 is fixed on the frame 1.Specifically, the elastic supporting member for supporting optical member 4 wraps Include the first wall 41 annular in shape, the second wall 42 annular in shape for being arranged at intervals at 41 inside of the first wall, connection described first The elastic wall 43 of wall 41 and second wall 42 and the fracture for being opened in second wall 42 and cutting off second wall 42 44。
The vibrating diaphragm 21 is attached at the elastic supporting member for supporting optical member 4 and is fixed on the frame 1 by the elastic supporting member for supporting optical member 4. The vibrating diaphragm 21, the voice coil 22 and the magnet steel 32 surround sounding inner cavity 20 jointly, and the fracture 44 will be in the sounding Chamber 20 is in communication with the outside.The pole piece 33 is contained in the sounding inner cavity 20.
The voice coil 22 is fixed on the side far from the vibrating diaphragm 21 of second wall 42 and part covers the fracture 44, i.e., the described voice coil 22 is arranged with 44 face of fracture.Specifically, the fracture 44 includes at least two and is spaced apart from each other and sets It sets.In the present embodiment, second wall 42 is in rectangle comprising two long sides 421, two being oppositely arranged are oppositely arranged short Side 422 and four corners 423, two fractures 44 are opened in two long sides 421 of second wall 42 respectively, and Respectively close to two non-conterminous corners 423.Two fractures 42 arrive the distance in immediate two corners 423 It is equal.The structure makes the stable structure of elastic supporting member for supporting optical member, even intensity, while air more equal when leaking from the fracture 42 Weighing apparatus, stability are higher.
That is, in above structure on the one hand the air in the sounding inner cavity 20 can pass through the voice coil 22 and institute The gap (a part of the i.e. described magnetic gap 10) stated between magnet steel 32 leaks out;At the same time it can also be let out by the fracture 42 It leaks out.And then realize the inside and outside sound pressure equalisation of the microphone device 100, to ensure that it works normally sounding, stablize its acoustics Energy.Above structure can also realize the smooth air leakage of the sounding inner cavity 20 i.e. under more accurate and miniature structure situation Out.
More preferably, the elastic supporting member for supporting optical member 4 is the flexible circuit board being electrically connected with the voice coil 22.The i.e. described resilient support Part 4 acts also as simultaneously provides the effect of electric signal for 22 lead of voice coil, and avoiding through pin configuration is the voice coil 22 Electric signal is introduced, that is, avoids the risk of broken string, improves the reliability of microphone device 100.
Compared with prior art, in microphone device of the invention, the vibrating diaphragm is fixed on by the elastic supporting member for supporting optical member The frame, the voice coil, which is fixed on second wall of the elastic supporting member for supporting optical member and plugs, to be suspended in magnetic gap, so that institute It states vibrating diaphragm, the voice coil and the magnet steel and surrounds sounding inner cavity jointly;It is described disconnected by being equipped in the elastic supporting member for supporting optical member Mouthful, and the Voice coil portions is made to cover the fracture, so that the sounding inner cavity is in communication with the outside by the fracture.It is above-mentioned Structure leak out the air acoustic pressure of the sounding inner cavity can not only by the magnetic gap between the voice coil and the magnet steel, It can also be leaked out simultaneously by the fracture, so that the gas pressure leak of the sounding inner cavity is more smooth, effectively improve institute State the acoustical behavior of microphone device.
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 (6)

1. a kind of microphone device comprising frame, the vibrational system for being fixed on the frame and the driving vibrational system sounding Magnetic circuit system;The vibrational system includes the vibrating diaphragm for being fixed on the frame and the voice coil for driving the diaphragm oscillations sounding; The magnetic circuit system includes being fixed on the magnetic bowl of the frame and being contained in the magnetic bowl and shape is arranged with magnetic bowl interval At the magnet steel of magnetic gap;The voice coil is plugged and is suspended in the magnetic gap, which is characterized in that the microphone device further includes It is fixed on the elastic supporting member for supporting optical member of the frame, the elastic supporting member for supporting optical member includes the first wall annular in shape, is arranged at intervals at described The elastic wall of the second wall annular in shape, connection first wall and second wall on the inside of one wall and it is opened in described second Wall and the fracture for cutting off second wall;The vibrating diaphragm is attached at the elastic supporting member for supporting optical member and is consolidated by the elastic supporting member for supporting optical member Due to the frame, the voice coil is fixed on the side far from the vibrating diaphragm of second wall and part covers the fracture; The vibrating diaphragm, the voice coil and the magnet steel surround sounding inner cavity jointly, and the fracture connects the sounding inner cavity and the external world It is logical.
2. microphone device according to claim 1, which is characterized in that the fracture includes at least two and is spaced apart from each other and sets It sets.
3. microphone device according to claim 2, which is characterized in that second wall is in rectangle comprising two set relatively Long side, two short sides being oppositely arranged and the four corners set, two fractures are opened in two of second wall respectively The long side, and respectively close to two non-conterminous corners.
4. microphone device according to claim 3, which is characterized in that two fractures to immediate two angles Portion is equidistant.
5. microphone device according to claim 1, which is characterized in that the elastic supporting member for supporting optical member is to be electrically connected with the voice coil Flexible circuit board.
6. microphone device according to claim 1, which is characterized in that the magnetic circuit system further include it is folded set be fixed on it is described The pole piece of magnet steel, the pole piece are contained in intracavitary in the sounding.
CN201810919805.4A 2018-08-14 2018-08-14 Microphone device Pending CN109121051A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810919805.4A CN109121051A (en) 2018-08-14 2018-08-14 Microphone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810919805.4A CN109121051A (en) 2018-08-14 2018-08-14 Microphone device

Publications (1)

Publication Number Publication Date
CN109121051A true CN109121051A (en) 2019-01-01

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Country Status (1)

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CN (1) CN109121051A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110366073A (en) * 2019-06-03 2019-10-22 瑞声科技(新加坡)有限公司 Microphone device
WO2020228341A1 (en) * 2019-05-10 2020-11-19 瑞声声学科技(深圳)有限公司 Sound generating device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001258093A (en) * 2000-03-10 2001-09-21 Victor Co Of Japan Ltd Electroacoustic transducer
CN201467431U (en) * 2009-05-15 2010-05-12 瑞声声学科技(常州)有限公司 Electric sound-energy sounding device
CN103347235A (en) * 2013-06-14 2013-10-09 歌尔声学股份有限公司 Sound production device
CN104125528A (en) * 2013-04-25 2014-10-29 易音特电子株式会社 Bonding structure of diaphragm for microspeaker
CN205142510U (en) * 2015-11-05 2016-04-06 瑞声光电科技(常州)有限公司 Loudspeaker
CN205320276U (en) * 2015-11-05 2016-06-15 瑞声光电科技(常州)有限公司 Loudspeaker
CN207354575U (en) * 2017-09-26 2018-05-11 瑞声光电科技(常州)有限公司 Loudspeaker enclosure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001258093A (en) * 2000-03-10 2001-09-21 Victor Co Of Japan Ltd Electroacoustic transducer
CN201467431U (en) * 2009-05-15 2010-05-12 瑞声声学科技(常州)有限公司 Electric sound-energy sounding device
CN104125528A (en) * 2013-04-25 2014-10-29 易音特电子株式会社 Bonding structure of diaphragm for microspeaker
CN103347235A (en) * 2013-06-14 2013-10-09 歌尔声学股份有限公司 Sound production device
CN205142510U (en) * 2015-11-05 2016-04-06 瑞声光电科技(常州)有限公司 Loudspeaker
CN205320276U (en) * 2015-11-05 2016-06-15 瑞声光电科技(常州)有限公司 Loudspeaker
CN207354575U (en) * 2017-09-26 2018-05-11 瑞声光电科技(常州)有限公司 Loudspeaker enclosure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020228341A1 (en) * 2019-05-10 2020-11-19 瑞声声学科技(深圳)有限公司 Sound generating device
CN110366073A (en) * 2019-06-03 2019-10-22 瑞声科技(新加坡)有限公司 Microphone device

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