CN108810771A - Microphone device - Google Patents

Microphone device Download PDF

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Publication number
CN108810771A
CN108810771A CN201810920776.3A CN201810920776A CN108810771A CN 108810771 A CN108810771 A CN 108810771A CN 201810920776 A CN201810920776 A CN 201810920776A CN 108810771 A CN108810771 A CN 108810771A
Authority
CN
China
Prior art keywords
fixed
dome
hole
microphone
voice coil
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
CN201810920776.3A
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 CN201810920776.3A priority Critical patent/CN108810771A/en
Publication of CN108810771A publication Critical patent/CN108810771A/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 is fixed on the vibrational system of the frame and drives the magnetic circuit system of the vibrational system vibration sounding;The vibrational system includes the vibrating diaphragm for being fixed on the frame, drives the voice coil of the diaphragm oscillations sounding and be sticked and be fixed on the top dome of the vibrating diaphragm;The top dome be sticked be fixed on the vibrating diaphragm close to the side of the magnetic circuit system, the top dome is equipped with through through-hole thereon, and the voice coil is fixed on the top dome and part is covered in the through-hole;The magnetic circuit system includes magnetic bowl and is contained in the magnetic bowl and the magnet steel to form magnetic gap is arranged with magnetic bowl interval, and the voice coil is plugged and is suspended in the magnetic gap;The top dome, 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 through-hole.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 vibrating diaphragms and acoustical generator applying to portable electronic product Part.
【Background technology】
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, is fixed on the vibrational system of frame and the driving vibrational system The magnetic circuit system of vibration sounding, the vibrational system include the vibrating diaphragm for being fixed on the frame, the sound of 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.
【Invention content】
The purpose of the present invention is overcoming above-mentioned technical problem, a kind of acoustical behavior more preferably microphone device is provided.
To achieve the goals above, the present invention provides a kind of microphone device comprising frame is fixed on shaking for the frame Dynamic system and the magnetic circuit system for driving the vibrational system vibration sounding;The vibrational system includes being fixed on shaking for the frame Film, the driving diaphragm oscillations sounding voice coil and be sticked and be fixed on the top dome of the vibrating diaphragm;The top dome, which is sticked, to be fixed on The side of the close magnetic circuit system of the vibrating diaphragm, the top dome are equipped with the through-hole through thereon, and the voice coil is fixed on institute The side far from the vibrating diaphragm and part for stating top dome are covered in the through-hole;The magnetic circuit system includes being fixed on the frame Magnetic bowl and be contained in the magnetic bowl and the magnet steel to form magnetic gap be set with magnetic bowl interval, the voice coil is plugged and is hanged It is placed in the magnetic gap;The top dome, the voice coil and the magnet steel surround sounding inner cavity jointly, and the through-hole is by the hair Sound inner cavity is in communication with the outside.
Preferably, the through-hole is rectangular.
Preferably, the through-hole includes the inner hole wall of the close sounding inner cavity and is oppositely arranged with the inner hole wall outer Hole wall, the voice coil close to one end of the top dome include close to sounding inner cavity medial surface and opposite with the medial surface set The lateral surface set, the distance of the medial surface to the inner hole wall are equal to the lateral surface to the distance of the outer hole wall.
Preferably, the through-hole includes at least four and spaced setting.
Preferably, four through-holes divide equally the opposite sides for being set to the top dome.
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 Intracavitary in sounding.
Preferably, the microphone device further includes auxiliary vibrating diaphragm, and the frame is fixed in described auxiliary vibrating diaphragm one end, another One end far from the top dome of the voice coil is fixed in one end.
Preferably, the microphone device further includes the elastic supporting member for supporting optical member for fitting in the auxiliary vibrating diaphragm, the resilient support The frame is fixed in part one end, and the other end is fixedly supported to one end far from the top dome of the voice coil.
Preferably, the elastic supporting member for supporting optical member is the flexible circuit board being electrically connected with the voice coil.
Preferably, the top dome is fixed on the vibrating diaphragm by glued mode.
Compared with prior art, in microphone device of the invention, the top dome is sticked and is fixed on the close of the vibrating diaphragm The side of the magnetic circuit system, the voice coil, which is fixed on the top dome and plugs, to be suspended in magnetic gap so that the top dome, institute It states voice coil and the magnet steel surrounds sounding inner cavity jointly, by opening up the through-hole run through thereon in the top dome and making the sound Circle pressure is set to the through-hole, to which the sounding inner cavity is in communication with the outside by the through-hole.Above structure makes the hair The air acoustic pressure of sound inner cavity can not only be leaked out by the magnetic gap between the voice coil and the magnet steel, while can also be passed through The through-hole leaks out, so that the gas pressure leak of the sounding inner cavity is more smooth, effectively improves the microphone device Acoustical behavior.
【Description of the drawings】
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, wherein:
Fig. 1 is the dimensional structure diagram of microphone device of the present invention;
Fig. 2 is the part isometric structural decomposition diagram of microphone device of the present invention;
Fig. 3 is the sectional view of the line A-A along Fig. 1;
Fig. 4 is the enlarged drawing of part shown in B in Fig. 3.
【Specific implementation mode】
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 describes, 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, be individually fixed in it is described The vibrational system 2 and magnetic circuit system 3 of frame 1 assist vibrating diaphragm 4 and elastic supporting member for supporting optical member 5, the magnetic circuit system 3 to drive described shake 2 vibration sounding of dynamic system.
The vibrational system 2 includes the vibrating diaphragm 21 for being fixed on the frame 1, the voice coil of 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.
In present embodiment, the top dome 23 be sticked be fixed on the vibrating diaphragm 21 close to the side of the magnetic circuit system 3. Its fixed form is unlimited, for example, the top dome 23 is bonded by glued mode is fixed on the vibrating diaphragm 21.
Shown in Fig. 3, specifically, the vibrating diaphragm 21 includes fixed vibration section 211, by the week of the vibration section 211 The outwardly extending ring portion 212 of edge and extends from the ring portion 212 to 1 direction of the frame and be fixed on the frame 1 Fixed part 213.The top dome 23, which is sticked, is fixed on the vibration section 211, the rigidity for increasing the vibration section 211, uses In the high-frequency acoustic performance for improving the microphone device 100.
In present embodiment, the top dome 23 is equipped with the through-hole 231 through thereon, and the voice coil 22 is fixed on the top dome The side and part of the 23 separate vibrating diaphragm 21 are covered in the through-hole 231, i.e., the described voice coil 22 and 231 face of the through-hole Setting.
The magnetic circuit system 3 include be fixed on the magnetic bowl 31 of the frame 1 and be contained in the magnetic bowl 31 it is interior and with it is described The setting of the interval of magnetic bowl 31 forms the magnet steel 32 of magnetic gap 10.The voice coil 22 is plugged and is suspended in the magnetic gap 10.
The top dome 23, the voice coil 22 and the magnet steel 32 surround sounding inner cavity 20 jointly, and the through-hole 231 will be described Sounding inner cavity 20 is in communication with the outside.
Certainly, the magnetic circuit system 3 further includes folding to set the pole piece 33 for being fixed on the magnet steel 32, and the pole piece 33 is contained in In the sounding inner cavity 20.The pole piece 33 is used to be 32 magnetic conduction of the magnet steel, reduces the outflow of the magnetic line of force, effectively improves described The driving force of magnetic circuit system 3.
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 (i.e. a part for the magnetic gap 10) stated between magnet steel 32 leaks out;At the same time it can also be let out by the through-hole 231 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 Go out.
Specifically, the quantity of the through-hole 231 can be one or more, in present embodiment, the through-hole 231 includes extremely Few four and spaced setting.More preferably, four through-holes 231 divide equally the opposite sides for being set to the top dome 23, from And formed symmetrical, which more balances when air is leaked from the through-hole 231, stability higher.
Shown in Fig. 4, the through-hole 231 is rectangular.The through-hole 231 includes close to the interior of the sounding inner cavity 20 Hole wall 2311 and the outer hole wall 2312 being oppositely arranged with the inner hole wall 2311.The one of the close top dome 23 of the voice coil 22 End includes the medial surface 221 and the lateral surface 222 that is oppositely arranged with the medial surface 221 close to sounding inner cavity 20, the inside The distance of face 221 to the inner hole wall 2311 is equal to the distance that the lateral surface 222 arrives the outer hole wall 2312.The structure is set It sets so that the pressure of the voice coil 22 is set on the centre position of the through-hole 231, i.e., the described through-hole 231 is located in the sounding inner cavity 20 With it to be located at the area outside the sounding inner cavity 20 equal for part, leakage is more smooth, stablizes.
The frame 1 is fixed in described 4 one end of auxiliary vibrating diaphragm, and the other end is fixed on the separate ball of the voice coil 22 The one end on top 23.The auxiliary vibrating diaphragm 4, which effectively prevents when the sound vibrating diaphragm 21 vibrates, makes the voice coil 22 generate lateral pendulum It is dynamic, that is, effectively improve the stability of the microphone device 100.Meanwhile the vibrational system also can be improved in the auxiliary vibrating diaphragm 4 2 oscillation intensity improves vocal performance.
The elastic supporting member for supporting optical member 5 fits in the auxiliary vibrating diaphragm 4, and the frame is fixed in 5 one end of the elastic supporting member for supporting optical member 1, the other end is fixedly supported to one end far from the top dome 23 of the voice coil 22.The structure setting can further improve institute The oscillation intensity for stating vibrating diaphragm 21 improves the acoustical behavioies such as the sounding loudness of the microphone device 100.
More preferably, the elastic supporting member for supporting optical member 5 is the flexible circuit board being electrically connected with the voice coil 22.The i.e. described resilient support Part 5 acts also as the effect that electric signal is provided for 22 lead of the voice coil simultaneously, and it is the voice coil 22 to avoid through pin configuration 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 top dome is sticked and is fixed on the close of the vibrating diaphragm The side of the magnetic circuit system, the voice coil, which is fixed on the top dome and plugs, to be suspended in magnetic gap so that the top dome, institute It states voice coil and the magnet steel surrounds sounding inner cavity jointly, by opening up the through-hole run through thereon in the top dome and making the sound Circle pressure is set to the through-hole, to which the sounding inner cavity is in communication with the outside by the through-hole.Above structure makes the hair The air acoustic pressure of sound inner cavity can not only be leaked out by the magnetic gap between the voice coil and the magnet steel, while can also be passed through The through-hole leaks out, so that the gas pressure leak of the sounding inner cavity is more smooth, effectively improves the microphone device Acoustical behavior.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills Art field, is included within the scope of the present invention.

Claims (10)

1. a kind of microphone device comprising frame, the vibrational system for being fixed on the frame and the driving vibrational system vibration The magnetic circuit system of sounding;The vibrational system includes the vibrating diaphragm for being fixed on the frame, the sound of the driving diaphragm oscillations sounding It encloses and is sticked and be fixed on the top dome of the vibrating diaphragm;The magnetic circuit system includes being fixed on the magnetic bowl of the frame and being contained in institute It states in magnetic bowl and the magnet steel to form magnetic gap is set with magnetic bowl interval, the voice coil plugs and is suspended in the magnetic gap It is interior, which is characterized in that the top dome be sticked be fixed on the vibrating diaphragm close to the side of the magnetic circuit system, the top dome is equipped with Through through-hole thereon, the voice coil is fixed on the side far from the vibrating diaphragm of the top dome and part covers the through-hole; The top dome, 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 through-hole.
2. microphone device according to claim 1, which is characterized in that the through-hole is rectangular.
3. microphone device according to claim 2, which is characterized in that the through-hole includes close to the interior of the sounding inner cavity One end of hole wall and the outer hole wall being oppositely arranged with the inner hole wall, the close top dome of the voice coil includes in sounding The medial surface of chamber and the lateral surface being oppositely arranged with the medial surface, the distance of the medial surface to the inner hole wall is equal to described Distance of the lateral surface to the outer hole wall.
4. microphone device according to claim 1, which is characterized in that the through-hole includes at least four and spaced sets It sets.
5. microphone device according to claim 2, which is characterized in that four through-holes, which are divided equally, is set to the top dome Opposite sides.
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.
7. microphone device according to claim 1, which is characterized in that the microphone device further includes auxiliary vibrating diaphragm, described The frame is fixed in auxiliary vibrating diaphragm one end, and the other end is fixed on one end far from the top dome of the voice coil.
8. microphone device according to claim 7, which is characterized in that the microphone device further includes fitting in the auxiliary The frame is fixed in the elastic supporting member for supporting optical member of vibrating diaphragm, described elastic supporting member for supporting optical member one end, and the other end is fixedly supported to the voice coil Far from the top dome one end.
9. microphone device according to claim 8, 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.
10. microphone device according to claim 1, which is characterized in that the top dome is fixed on described by glued mode Vibrating diaphragm.
CN201810920776.3A 2018-08-14 2018-08-14 Microphone device Pending CN108810771A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810920776.3A CN108810771A (en) 2018-08-14 2018-08-14 Microphone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810920776.3A CN108810771A (en) 2018-08-14 2018-08-14 Microphone device

Publications (1)

Publication Number Publication Date
CN108810771A true CN108810771A (en) 2018-11-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810920776.3A Pending CN108810771A (en) 2018-08-14 2018-08-14 Microphone device

Country Status (1)

Country Link
CN (1) CN108810771A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109905821A (en) * 2018-12-30 2019-06-18 瑞声科技(新加坡)有限公司 Loudspeaker
CN111436015A (en) * 2019-12-30 2020-07-21 瑞声科技(新加坡)有限公司 Sound production device
WO2021000157A1 (en) * 2019-06-30 2021-01-07 瑞声声学科技(深圳)有限公司 Sound generating device
CN112261557A (en) * 2020-10-21 2021-01-22 瑞声新能源发展(常州)有限公司科教城分公司 Speaker monomer and electronic equipment

Citations (8)

* 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
CN201854414U (en) * 2009-12-21 2011-06-01 瑞声声学科技(深圳)有限公司 Electromagnetic loudspeaker
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
CN206524953U (en) * 2017-01-20 2017-09-26 瑞声科技(新加坡)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 (8)

* 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
CN201854414U (en) * 2009-12-21 2011-06-01 瑞声声学科技(深圳)有限公司 Electromagnetic loudspeaker
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
CN206524953U (en) * 2017-01-20 2017-09-26 瑞声科技(新加坡)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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109905821A (en) * 2018-12-30 2019-06-18 瑞声科技(新加坡)有限公司 Loudspeaker
WO2021000157A1 (en) * 2019-06-30 2021-01-07 瑞声声学科技(深圳)有限公司 Sound generating device
CN111436015A (en) * 2019-12-30 2020-07-21 瑞声科技(新加坡)有限公司 Sound production device
CN112261557A (en) * 2020-10-21 2021-01-22 瑞声新能源发展(常州)有限公司科教城分公司 Speaker monomer and electronic equipment

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