CN109151673A - Microphone device - Google Patents

Microphone device Download PDF

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Publication number
CN109151673A
CN109151673A CN201810920616.9A CN201810920616A CN109151673A CN 109151673 A CN109151673 A CN 109151673A CN 201810920616 A CN201810920616 A CN 201810920616A CN 109151673 A CN109151673 A CN 109151673A
Authority
CN
China
Prior art keywords
fixed
vibrating diaphragm
microphone device
top dome
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
CN201810920616.9A
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 CN201810920616.9A priority Critical patent/CN109151673A/en
Publication of CN109151673A publication Critical patent/CN109151673A/en
Pending legal-status Critical Current

Links

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
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

The present invention discloses a kind of microphone device comprising frame is fixed on the vibrational system of frame and drives the magnetic circuit system of vibrational system vibration sounding；Vibrational system includes the vibrating diaphragm for being fixed on frame, drives the voice coil of diaphragm oscillations sounding and be sticked and be fixed on the top dome of vibrating diaphragm；Magnetic circuit system includes being fixed on the magnetic bowl of frame and being contained in magnetic bowl and the magnet steel to form magnetic gap is arranged with magnetic bowl interval, voice coil is plugged and is suspended in magnetic gap, it is characterized in that, top dome, which is sticked, is fixed on the side of the close magnetic circuit system of vibrating diaphragm, top dome, which is equipped with far from the side of vibrating diaphragm to the direction close to vibrating diaphragm, to be recessed to form groove, and voice coil is fixed on the side of the separate vibrating diaphragm of top dome and pressure is set to groove；Top dome, voice coil and magnet steel surround sounding inner cavity jointly, and sounding inner cavity is in communication with the outside by groove.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 for applying to portable electronic product Part.
[background technique]
With the arrival of mobile internet era, the quantity of Intelligent mobile equipment constantly rises.And in numerous mobile devices Among, mobile phone is undoubtedly most common, most portable mobile terminal device.Currently, the function of mobile phone is extremely various, one of them is just It is the music function of high-quality, therefore, the microphone device for playing sound is widely applied Intelligent mobile equipment till now Among.
The microphone device of the relevant technologies 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 leaking out by the gap between voice coil and magnet steel, to balance acoustic pressure.But with the miniature development of microphone device and essence Close development, the gap 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.
To achieve the goals above, the present invention provides a kind of microphone device comprising frame, the vibration for being fixed on the frame Dynamic system and the magnetic circuit system for driving the vibrational system vibration sounding；The vibrational system includes being fixed on the vibration of 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 close to the magnetic circuit system of the vibrating diaphragm, the top dome are equipped with far from the side of the vibrating diaphragm to close to the vibrating diaphragm Direction be recessed the groove to be formed, the voice coil is fixed on described in the side far from the vibrating diaphragm of the top dome and part covering Groove；The magnetic circuit system includes being fixed on the magnetic bowl of the frame and being contained in the magnetic bowl and set with magnetic bowl interval The magnet steel to form magnetic gap is set, the voice coil is plugged and is suspended in the magnetic gap；The top dome, the voice coil and the magnetic Steel surrounds sounding inner cavity jointly, and the sounding inner cavity is in communication with the outside by the groove.
Preferably, the groove is in rectangle.
Preferably, the groove includes the internal groove side wall of the close sounding inner cavity and is oppositely arranged with the internal groove side wall outer Cell wall, one end close to the top dome of the voice coil 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 internal groove side wall are equal to the lateral surface to the distance of the external groove sidevall.
Preferably, the groove includes at least four and is spaced apart from each other setting.
Preferably, four grooves 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 It is 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, pass through the groove of the formation that is recessed in the top dome and make the voice coil portion Divide covering the groove, so that the sounding inner cavity be in communication with the outside by the groove.Above structure makes the sounding The air acoustic pressure of 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 groove leaks out, so that the gas pressure leak of the sounding inner cavity is more smooth, effectively improves the microphone device Acoustical behavior.
[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 decomposition diagram of microphone device of the present invention；
Fig. 3 is along Fig. 1 along the cross-sectional view of line A-A；
Fig. 4 is the enlarged drawing of part shown in B in Fig. 3；
Fig. 5 is the schematic perspective view at another visual angle of top dome 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, 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 the vibration Dynamic 2 vibration sounding of 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 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, which is sticked, is fixed on the side close to the magnetic circuit system 3 of the vibrating diaphragm 21. Its fixed form is unlimited, for example, the top dome 23 is bonded by glued mode is fixed on the vibrating diaphragm 21.
Incorporated by reference to 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 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, for increasing the rigidity of 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 far from the side of the vibrating diaphragm 21 to the direction close to the vibrating diaphragm 21 Be recessed the groove 231 formed, and the voice coil 22 is fixed on the side far from the vibrating diaphragm 21 of the top dome 23 and part covers The groove 231, i.e., the described voice coil 22 are arranged with 231 face of groove.
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 groove 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 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 (a part of the i.e. described magnetic gap 10) stated between magnet steel 32 leaks out；At the same time it can also pass through the groove 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 sound Learn performance.Above structure under more accurate and miniature structure situation, can also realize the smooth air of the sounding inner cavity 20 It leaks out.
Preferably, the groove 231 is in rectangle.More preferably, the groove 231 includes close to the interior of the sounding inner cavity 20 Cell wall 2311 and the external groove sidevall 2312 being oppositely arranged with the internal groove side 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 d1 of face 221 to the internal groove side wall 2311 is equal to the distance d2 that the lateral surface 222 arrives the external groove sidevall 2312, to make The leakage path central symmetry that the groove 231 is formed is obtained, so that leakage is more smooth, stability is higher.
Specifically, the quantity of the groove 231 can be to be one or more, in present embodiment, the groove 231 includes extremely Lack four and is spaced apart from each other setting.More preferably, four grooves 231 divide equally the opposite sides for being set to the top dome 23, from And formed symmetrical, which balance air more when leaking from the groove 231, and stability is higher.
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 makes the voice coil 22 generate lateral pendulum when effectively preventing the sound vibrating diaphragm 21 vibration 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 described 5 one end of 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 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 100 of the invention, the top dome 23 is sticked and is fixed on the vibrating diaphragm 21 Close to the magnetic circuit system 3 side, the voice coil 22, which is fixed on the top dome 23 and plugs, to be suspended in magnetic gap so that The top dome 23, the voice coil 22 and the magnet steel 32 surround sounding inner cavity 20 jointly, pass through the concave shape in the top dome 23 At groove 231 and so that 22 part of voice coil is covered the groove 231, thus will be in the sounding by the groove 231 Chamber 20 is in communication with the outside.Above structure makes the air acoustic pressure of the sounding inner cavity 20 not only can be by the voice coil 22 and institute The magnetic gap stated between magnet steel 32 leaks out, while can also be leaked out by the groove 231, so that the sounding The gas pressure leak of inner cavity 20 is more smooth, effectively improves the acoustical behavior of the microphone device 100.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all 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 sound of the vibrating diaphragm for being fixed on the frame, 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, which is sticked, is fixed on the side close to the magnetic circuit system of the vibrating diaphragm, and the top dome is separate The side of the vibrating diaphragm, which is equipped with to the direction close to the vibrating diaphragm, to be recessed the groove to be formed, and the voice coil is fixed on the top dome The side and part of the separate vibrating diaphragm cover the groove；The top dome, the voice coil and the magnet steel surround sounding jointly The sounding inner cavity is in communication with the outside by inner cavity, the groove.
2. microphone device according to claim 1, which is characterized in that the groove is in rectangle.
3. microphone device according to claim 2, which is characterized in that the groove includes close to the interior of the sounding inner cavity Cell wall and the external groove sidevall being oppositely arranged with the internal groove side wall, one end close to the top dome of the voice coil include 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 internal groove side wall are equal to described Distance of the lateral surface to the external groove sidevall.
4. microphone device according to claim 1, which is characterized in that the groove includes at least four and is spaced apart from each other and sets It sets.
5. microphone device according to claim 4, which is characterized in that four grooves, 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.
CN201810920616.9A 2018-08-14 2018-08-14 Microphone device Pending CN109151673A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810920616.9A CN109151673A (en) 2018-08-14 2018-08-14 Microphone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810920616.9A CN109151673A (en) 2018-08-14 2018-08-14 Microphone device

Publications (1)

Publication Number Publication Date
CN109151673A true CN109151673A (en) 2019-01-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN109151673A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110248289A (en) * 2019-04-19 2019-09-17 瑞声科技(新加坡)有限公司 Acoustical generator
CN110248294A (en) * 2019-04-19 2019-09-17 瑞声科技(新加坡)有限公司 Acoustical generator
WO2020140543A1 (en) * 2018-12-30 2020-07-09 瑞声声学科技(深圳)有限公司 Speaker
CN111954126A (en) * 2020-06-30 2020-11-17 瑞声新能源发展(常州)有限公司科教城分公司 Carbon fiber dome and loudspeaker
WO2020258261A1 (en) * 2019-06-28 2020-12-30 瑞声声学科技(深圳)有限公司 Loudspeaker
CN112165669A (en) * 2020-10-22 2021-01-01 瑞声新能源发展(常州)有限公司科教城分公司 Loudspeaker
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
WO2021134681A1 (en) * 2019-12-31 2021-07-08 瑞声声学科技(深圳)有限公司 Sound emission device
CN114268862A (en) * 2021-12-28 2022-04-01 歌尔股份有限公司 Sound production monomer and terminal
WO2022110457A1 (en) * 2020-11-30 2022-06-02 瑞声声学科技(深圳)有限公司 Sound production device

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CN1575039A (en) * 2003-05-26 2005-02-02 日本先锋公司 Speaker and manufacturing method for the same
CN201854414U (en) * 2009-12-21 2011-06-01 瑞声声学科技(深圳)有限公司 Electromagnetic loudspeaker
CN205142510U (en) * 2015-11-05 2016-04-06 瑞声光电科技(常州)有限公司 Loudspeaker
US20170171664A1 (en) * 2014-06-30 2017-06-15 Goertek Inc. Sound producing device
CN206524953U (en) * 2017-01-20 2017-09-26 瑞声科技(新加坡)有限公司 Loudspeaker

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1575039A (en) * 2003-05-26 2005-02-02 日本先锋公司 Speaker and manufacturing method for the same
CN201854414U (en) * 2009-12-21 2011-06-01 瑞声声学科技(深圳)有限公司 Electromagnetic loudspeaker
US20170171664A1 (en) * 2014-06-30 2017-06-15 Goertek Inc. Sound producing device
CN205142510U (en) * 2015-11-05 2016-04-06 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

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020140543A1 (en) * 2018-12-30 2020-07-09 瑞声声学科技(深圳)有限公司 Speaker
CN110248294B (en) * 2019-04-19 2021-02-26 瑞声科技(新加坡)有限公司 Sound generator
CN110248294A (en) * 2019-04-19 2019-09-17 瑞声科技(新加坡)有限公司 Acoustical generator
CN110248289A (en) * 2019-04-19 2019-09-17 瑞声科技(新加坡)有限公司 Acoustical generator
CN110248289B (en) * 2019-04-19 2021-10-19 瑞声科技(新加坡)有限公司 Sound generator
WO2020258261A1 (en) * 2019-06-28 2020-12-30 瑞声声学科技(深圳)有限公司 Loudspeaker
WO2021134681A1 (en) * 2019-12-31 2021-07-08 瑞声声学科技(深圳)有限公司 Sound emission device
CN111954126A (en) * 2020-06-30 2020-11-17 瑞声新能源发展(常州)有限公司科教城分公司 Carbon fiber dome and loudspeaker
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
WO2022082861A1 (en) * 2020-10-21 2022-04-28 瑞声声学科技(深圳)有限公司 Speaker unit and electronic device
CN112165669A (en) * 2020-10-22 2021-01-01 瑞声新能源发展(常州)有限公司科教城分公司 Loudspeaker
WO2022082857A1 (en) * 2020-10-22 2022-04-28 瑞声声学科技(深圳)有限公司 Loudspeaker
WO2022110457A1 (en) * 2020-11-30 2022-06-02 瑞声声学科技(深圳)有限公司 Sound production device
CN114268862A (en) * 2021-12-28 2022-04-01 歌尔股份有限公司 Sound production monomer and terminal

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