CN109040906A - Microphone device - Google Patents

Microphone device Download PDF

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Publication number
CN109040906A
CN109040906A CN201810920003.5A CN201810920003A CN109040906A CN 109040906 A CN109040906 A CN 109040906A CN 201810920003 A CN201810920003 A CN 201810920003A CN 109040906 A CN109040906 A CN 109040906A
Authority
CN
China
Prior art keywords
vibrating diaphragm
fixed
microphone
hole
dome
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
CN201810920003.5A
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 CN201810920003.5A priority Critical patent/CN109040906A/en
Publication of CN109040906A publication Critical patent/CN109040906A/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
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
    • H04R1/28Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807Enclosures comprising vibrating or resonating arrangements
    • H04R1/2811Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers

Abstract

The present invention discloses a kind of microphone device comprising frame, vibrational system and magnetic circuit system;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;Vibrating diaphragm is equipped with the through-hole through thereon, top dome, which is sticked, is fixed on the side of the separate magnetic circuit system of vibrating diaphragm, top dome is equipped with the groove corresponding with through-hole formed that is recessed inwardly by it close to the side of magnetic circuit system, groove is connected to through-hole and through-hole is completely covered in the orthographic projection to through-hole, voice coil is fixed on side of the vibrating diaphragm far from top dome and part covering through-hole, vibrating diaphragm, voice coil and magnet steel surround sounding inner cavity jointly, and sounding inner cavity is in communication with the outside by groove via through holes.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 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.
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 vibrating diaphragm, which is equipped with, runs through it On through-hole, the top dome be sticked is fixed on the vibrating diaphragm far from the magnetic circuit system side, the top dome be equipped with by it Side close to the magnetic circuit system is recessed inwardly the groove corresponding with the through-hole to be formed, and the groove and the through-hole connect Lead to and the through-hole is completely covered to the orthographic projection of the through-hole, the voice coil is fixed on one of the vibrating diaphragm far from the top dome Side and part cover the through-hole, the vibrating diaphragm, the voice coil and the magnet steel surround sounding inner cavity jointly, and the groove is through institute It states through-hole the sounding inner cavity is in communication with the outside.
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 through-hole includes at least four and is spaced apart from each other setting.
Preferably, four through-holes divide equally the opposite sides for being set to the vibrating diaphragm.
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 vibrating diaphragm is equipped with the through-hole through thereon, by the ball Topstick sets the side far from the magnetic circuit system for being fixed on the vibrating diaphragm, and the top dome is equipped with by it close to the magnetic circuit system Side be recessed inwardly the groove corresponding with the through-hole to be formed, the groove is connected to the through-hole and to the through-hole The through-hole is completely covered in orthographic projection, and the voice coil is fixed on described in side of the vibrating diaphragm far from the top dome and part covering Through-hole, the vibrating diaphragm, the voice coil and the magnet steel surround sounding inner cavity jointly, and the groove is through the through-hole by the sounding Inner cavity is in communication with the outside.Above structure makes the air acoustic pressure of the sounding inner cavity not only can be by the voice coil and the magnetic Magnetic gap between steel leaks out, while can also be leaked out by the through-hole, so that the air pressure of the sounding inner cavity is let out Leakage is more smooth, effectively improves the acoustical behavior of the 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 decomposition diagram of microphone device of the present invention;
Fig. 3 is the cross-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 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 far from 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. 3-4, specifically, the vibrating diaphragm 21 includes fixed vibration section 211, by the vibration section 211 The outwardly extending ring portion 212 of periphery 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 vibrating diaphragm 21 is equipped with the through-hole 2111 through thereon, and the through-hole 2111 is specifically provided with On the fixed vibration section 211, the top dome 23, which is sticked, is fixed on the side far from the magnetic circuit system 3 of the vibrating diaphragm 21, The top dome 23 is recessed inwardly by the side close to the magnetic circuit system 3 and forms groove 231, the groove 231 and the through-hole 2111 are connected to and the through-hole 2111 are completely covered to the orthographic projection of the through-hole 2111, and the voice coil 22 is fixed on the vibrating diaphragm 21 sides far from the top dome 23.
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 vibrating diaphragm 21, the voice coil 22 and the magnet steel 32 surround sounding inner cavity 20 jointly, described in the warp of groove 231 The sounding inner cavity 20 is in communication with the outside by through-hole 2111.
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 through-hole 2111 It is leaked out with the groove 231.And then realize the inside and outside sound pressure equalisation of the microphone device 100, to ensure that it works normally hair Sound stablizes its acoustical behavior.Above structure under more accurate and miniature structure situation, can also realize the sounding inner cavity 20 Smooth air leak out.
Specifically, the quantity of the through-hole 2111 can be one or more, the number for the groove 231 that face is arranged therewith Amount keeps consistent with the through-hole 2111.In present embodiment, the through-hole 2111 includes at least four and is spaced apart from each other setting. More preferably, four through-holes 2111 divide equally the opposite sides for being set to the top dome 23, to form symmetrical, the structure So that air more balances when leaking from the through-hole 231, stability is higher.
In present embodiment, the groove 231 is in rectangle, and 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 of face 221 to the internal groove side wall 2311 is equal to the distance that the lateral surface 222 arrives the external groove sidevall 2312.
Institute's frame 1 is fixed in described 4 one end of auxiliary vibrating diaphragm, and the other end is fixed on the separate top dome of the voice coil 22 23 one end.The auxiliary vibrating diaphragm 4 makes the voice coil 22 generate horizontal swing when effectively preventing the sound vibrating diaphragm 21 vibration, Effectively improve the stability of the microphone device 100.Meanwhile the vibrational system 2 also can be improved in the auxiliary vibrating diaphragm 4 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 of the invention, the vibrating diaphragm is equipped with the through-hole through thereon, by the ball Topstick sets the side far from the magnetic circuit system for being fixed on the vibrating diaphragm, and the top dome is equipped with by it close to the magnetic circuit system Side be recessed inwardly the groove corresponding with the through-hole to be formed, the groove is connected to the through-hole and to the through-hole The through-hole is completely covered in orthographic projection, and the voice coil is fixed on described in side of the vibrating diaphragm far from the top dome and part covering Through-hole, the vibrating diaphragm, the voice coil and the magnet steel surround sounding inner cavity jointly, and the groove is through the through-hole by the sounding Inner cavity is in communication with the outside.Above structure makes the air acoustic pressure of the sounding inner cavity not only can be by the voice coil and the magnetic Magnetic gap between steel leaks out, while can also be leaked out by the through-hole, so that the air pressure of the sounding inner cavity is let out Leakage is more smooth, effectively improves the acoustical behavior of the 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 (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 vibrating diaphragm is equipped with the through-hole through thereon, and the top dome, which is sticked, is fixed on the separate described of the vibrating diaphragm The side of magnetic circuit system, the top dome be equipped be recessed inwardly by it close to the side of the magnetic circuit system it is being formed with the through-hole Corresponding groove, the groove are connected to the through-hole and the through-hole, the sound are completely covered to the orthographic projection of the through-hole Circle is fixed on side of the vibrating diaphragm far from the top dome and part and covers the through-hole, the vibrating diaphragm, the voice coil and described Magnet steel surrounds sounding inner cavity jointly, and the sounding inner cavity is in communication with the outside by the groove through the through-hole.
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 through-hole includes at least four and is spaced apart from each other and 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 vibrating diaphragm 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.
CN201810920003.5A 2018-08-14 2018-08-14 Microphone device Pending CN109040906A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810920003.5A CN109040906A (en) 2018-08-14 2018-08-14 Microphone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810920003.5A CN109040906A (en) 2018-08-14 2018-08-14 Microphone device

Publications (1)

Publication Number Publication Date
CN109040906A true CN109040906A (en) 2018-12-18

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

Country Link
CN (1) CN109040906A (en)

Cited By (6)

* 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
CN111163407A (en) * 2020-01-03 2020-05-15 厦门东声电子有限公司 Loudspeaker with positioning piece and assembling method thereof
WO2020140542A1 (en) * 2018-12-30 2020-07-09 瑞声声学科技(深圳)有限公司 Loudspeaker
CN111405427A (en) * 2019-12-27 2020-07-10 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
WO2021068297A1 (en) * 2019-10-10 2021-04-15 瑞声声学科技(深圳)有限公司 Sound generating device

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CN205430595U (en) * 2015-11-30 2016-08-03 歌尔声学股份有限公司 Loudspeaker
CN205987363U (en) * 2016-08-26 2017-02-22 深圳市音沃仕科技有限公司 Electroacoustic transducer
CN206524953U (en) * 2017-01-20 2017-09-26 瑞声科技(新加坡)有限公司 Loudspeaker

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Publication number Priority date Publication date Assignee Title
US8160289B2 (en) * 2006-01-27 2012-04-17 Samsung Electronics Co., Ltd Speaker with auxiliary air hole
CN202818588U (en) * 2012-08-27 2013-03-20 瑞声光电科技(常州)有限公司 Loudspeaker
CN103024649A (en) * 2012-12-10 2013-04-03 瑞声声学科技(深圳)有限公司 Sound production device
CN103209377A (en) * 2013-03-19 2013-07-17 歌尔声学股份有限公司 Multi-functional loudspeaker
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* 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
WO2020140542A1 (en) * 2018-12-30 2020-07-09 瑞声声学科技(深圳)有限公司 Loudspeaker
WO2021068297A1 (en) * 2019-10-10 2021-04-15 瑞声声学科技(深圳)有限公司 Sound generating device
CN111405427A (en) * 2019-12-27 2020-07-10 瑞声科技(新加坡)有限公司 Sound production device
CN111163407A (en) * 2020-01-03 2020-05-15 厦门东声电子有限公司 Loudspeaker with positioning piece and assembling method thereof
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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