CN208798190U - Microphone device - Google Patents

Microphone device Download PDF

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Publication number
CN208798190U
CN208798190U CN201821305166.4U CN201821305166U CN208798190U CN 208798190 U CN208798190 U CN 208798190U CN 201821305166 U CN201821305166 U CN 201821305166U CN 208798190 U CN208798190 U CN 208798190U
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CN
China
Prior art keywords
microphone
vibrating diaphragm
convex closure
magnetic circuit
fixed
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Active
Application number
CN201821305166.4U
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Chinese (zh)
Inventor
宋威
张帆
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AAC Technologies Pte Ltd
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AAC Technologies Pte Ltd
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Priority to CN201821305166.4U priority Critical patent/CN208798190U/en
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Abstract

The utility model provides a kind of microphone device comprising frame, vibrational system and 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 the magnet steel to form magnetic gap is arranged with magnetic bowl interval;The voice coil is plugged and is suspended in the magnetic gap, the vibrating diaphragm, which is equipped with, protrudes the convex closure slot formed by its direction for being laterally away from the magnetic circuit system close to the one of the magnetic circuit system, and the voice coil is fixed on the side of the close magnetic circuit system of the vibrating diaphragm and part covers the convex closure slot;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 convex closure slot.Compared with the relevant technologies, the microphone device acoustical behavior of the utility model is more excellent.

Description

Microphone device
[technical field]
The utility model relates to electroacoustic conversion art more particularly to a kind of vibrating diaphragms and hair for applying to portable electronic product Acoustic device.
[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.
[utility model content]
The purpose of the utility model is to overcome above-mentioned technical problem, a kind of acoustical behavior more preferably microphone device is provided.
The utility model provides a kind of microphone device comprising frame, the vibrational system and driving for being fixedly arranged on the frame The magnetic circuit system of the vibrational system vibration sounding;The vibrational system includes being fixed on described in vibrating diaphragm and the driving of the frame The voice coil of diaphragm oscillations sounding;The magnetic circuit system include be fixed on the magnetic bowl of the frame and be contained in the magnetic bowl and with The magnet steel to form magnetic gap is arranged in magnetic bowl interval;The voice coil is plugged and is suspended in the magnetic gap, and the vibrating diaphragm is set There is the direction for being laterally away from the magnetic circuit system close to the one of the magnetic circuit system by it to protrude the convex closure slot formed, the voice coil The side and part for being fixed on the close magnetic circuit system of the vibrating diaphragm cover the convex closure slot;The vibrating diaphragm, the voice coil And the magnet steel surrounds sounding inner cavity jointly, the sounding inner cavity is in communication with the outside by the convex closure slot.
Preferably, the convex closure slot is in rectangular channel.
Preferably, the convex closure slot includes the internal groove side wall of the close sounding inner cavity and is oppositely arranged with the internal groove side wall External groove sidevall, the voice coil close to the vibrating diaphragm one end include close to the sounding inner cavity medial surface and with the medial surface The lateral surface being oppositely arranged, the distance of the medial surface to the internal groove side wall be equal to the lateral surface to the external groove sidevall away from From.
Preferably, the vibrational system further includes top dome, and the top dome, which is sticked, is fixed on the separate magnetic of the vibrating diaphragm The side of road system;The top dome be equipped with through thereon and with the matched through-hole of convex closure slot, the convex closure slot is arranged in In the through-hole.
Preferably, the separate magnetic circuit system of the side and the top dome far from the magnetic circuit system of the convex closure slot Side flush.
Preferably, the convex closure slot includes at least four and is spaced apart from each other setting.
Preferably, four convex closure slots divide equally the opposite sides that the vibrating diaphragm is arranged in.
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.
Compared with the relevant technologies, in the microphone device of the utility model, the vibrating diaphragm is fixed on the frame, the sound Circle, which is fixed on the top dome and plugs, to be suspended in magnetic gap, so that the vibrating diaphragm, the voice coil and the magnet steel enclose jointly At sounding inner cavity, the direction for being laterally away from the magnetic circuit system close to the one of the magnetic circuit system by it is equipped with by the vibrating diaphragm The convex closure slot formed is protruded, and makes the side for the close magnetic circuit system for being fixed on the vibrating diaphragm and partially covers the convex closure Slot, so that the sounding inner cavity is in communication with the outside by the convex closure slot.Above structure makes the air of the sounding inner cavity Acoustic pressure can not only be leaked out by the magnetic gap between the voice coil and the magnet steel, while can also be leaked by the convex closure slot Out, so that the gas pressure leak of the sounding inner cavity is more smooth, the acoustical behavior of the microphone device is effectively improved.
[Detailed description of the invention]
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings, in which:
Fig. 1 is the schematic perspective view of the utility model microphone device;
Fig. 2 is the part isometric structural exploded view of the utility model microphone device;
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.
[specific embodiment]
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work All other embodiment obtained, fall within the protection scope of the utility model.
Please refer to Fig. 1-4, the utility model provides a kind of microphone device 100 comprising frame 1, vibrational system 2, Magnetic circuit system 3, auxiliary vibrating diaphragm 4 and elastic supporting member for supporting optical member 5.
The frame 1 is for fixing the vibrational system 2, the magnetic circuit system 3, the auxiliary vibrating diaphragm 4 and the bullet Property supporting element 5.In present embodiment, the frame 1 is in rectangular configuration.
The vibrational system 2 is fixed on the frame 1.The vibrational system 2 includes the vibrating diaphragm for being fixed on the frame 1 21, it drives the voice coil 22 of 21 vibration sounding of vibrating diaphragm and is sticked and be fixed on the top dome 23 of the vibrating diaphragm 21.
Incorporated by reference to shown in Fig. 3, specifically, the vibrating diaphragm 21 include vibration section 211, from the periphery of the vibration section 211 to The ring portion 212 of outer extension extends from the ring portion 212 to 1 direction of frame and is fixed on the fixed part of the frame 1 213 and the convex closure slot formed is protruded by its direction for being laterally away from the magnetic circuit system 3 close to the one of the magnetic circuit system 3 214.The vibrating diaphragm 21, the voice coil 22 and the magnet steel 32 surround sounding inner cavity 20 jointly, and the convex closure slot 214 is by the hair Sound inner cavity 20 is in communication with the outside.
The 214 convex closure slot of convex closure slot is in rectangular channel.Specifically, the convex closure slot 214 includes close to the sounding inner cavity 20 internal groove side wall 2141 and the external groove sidevall 2142 being oppositely arranged with the internal groove side wall 2141.
Specifically, the quantity of the convex closure slot 214 can be to be one or more, in present embodiment, the convex closure slot 214 is wrapped It includes at least four and is spaced apart from each other setting.More preferably, four convex closure slots 214, which are divided equally, is set to opposite the two of the vibrating diaphragm 21 Side, to be formed symmetrical.The structure balances air more when leaking from the convex closure slot 214, and stability is higher.
The voice coil 22 is fixed on the side of the close magnetic circuit system 3 of the vibrating diaphragm 21 and part covers the convex closure Slot 214, i.e., the described voice coil 22 are arranged with 214 face of convex closure slot.It wraps one end close to the vibrating diaphragm 21 of the voice coil 22 The lateral surface 222 for including the medial surface 221 of the close sounding inner cavity 20 and being oppositely arranged with the medial surface 221, the inside The distance of face 221 to the internal groove side wall 2141 is equal to the distance that the lateral surface 222 arrives the external groove sidevall 2142.
The top dome 23, which is sticked, is fixed on the side far from the magnetic circuit system 3 of the vibrating diaphragm 21, described for increasing The rigidity of vibrating diaphragm 21, for improving the high-frequency acoustic performance of the microphone device 100.The top dome 23 is consolidated with the vibrating diaphragm 21 It is unlimited to determine mode, for example, the top dome 23 is bonded by glued mode is fixed on the vibrating diaphragm 21.
In present embodiment, the top dome 23 be equipped with through thereon and with the matched through-hole 231 of the convex closure slot 214. Specifically, 214 slot of convex closure slot is arranged in the through-hole 231.One far from the magnetic circuit system 3 of the convex closure slot 214 Side is flushed with the side far from the magnetic circuit system 3 of the top dome 23.The convex closure slot 214 forms one with the through-hole 231 Body structure, the through-hole 231 are corresponded with the convex closure slot 214.
The magnetic circuit system 3 is fixed on the frame 1.The magnetic circuit system 3 drives 2 vibration sounding of vibrational system. The magnetic circuit system 3 includes being fixed on the magnetic bowl 31 of the frame 1 and being contained in the magnetic bowl 31 and between the magnetic bowl 31 The magnet steel 32 of magnetic gap 10 is formed every setting.The voice coil 22 is plugged and is 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, 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 convex closure slot 214 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 Performance.Above structure under more accurate and miniature structure situation, can also realize that the smooth air of the sounding inner cavity 20 is let out It leaks out.
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.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.
Compared with the relevant technologies, in the microphone device of the utility model, the vibrating diaphragm is fixed on the frame, the sound Circle, which is fixed on the top dome and plugs, to be suspended in magnetic gap, so that the vibrating diaphragm, the voice coil and the magnet steel enclose jointly At sounding inner cavity, the direction for being laterally away from the magnetic circuit system close to the one of the magnetic circuit system by it is equipped with by the vibrating diaphragm The convex closure slot formed is protruded, and makes the side for the close magnetic circuit system for being fixed on the vibrating diaphragm and partially covers the convex closure Slot, so that the sounding inner cavity is in communication with the outside by the convex closure slot.Above structure makes the air of the sounding inner cavity Acoustic pressure can not only be leaked out by the magnetic gap between the voice coil and the magnet steel, while can also be leaked by the convex closure slot Out, so that the gas pressure leak of the sounding inner cavity is more smooth, the acoustical behavior of the microphone device is effectively improved.
Above-described is only the embodiments of the present invention, it should be noted here that for the ordinary skill of this field For personnel, without departing from the concept of the present invention, improvement can also be made, but these belong to it is practical Novel protection scope.

Claims (10)

1. a kind of microphone device comprising frame, the vibrational system for being fixedly arranged 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 and the sound for driving the diaphragm oscillations sounding Circle;The magnetic circuit system includes being fixed on the magnetic bowl of the frame and being contained in the magnetic bowl and be arranged with magnetic bowl interval Form the magnet steel of magnetic gap;The voice coil is plugged and is suspended in the magnetic gap, which is characterized in that the vibrating diaphragm is equipped with by it The convex closure slot to be formed is protruded in a direction for being laterally away from the magnetic circuit system close to the magnetic circuit system, and the voice coil is fixed on The side and part of the close magnetic circuit system of the vibrating diaphragm cover the convex closure slot;The vibrating diaphragm, the voice coil and institute It states magnet steel and surrounds sounding inner cavity jointly, the sounding inner cavity is in communication with the outside by the convex closure slot.
2. microphone device according to claim 1, which is characterized in that the convex closure slot is in rectangular channel.
3. microphone device according to claim 2, which is characterized in that the convex closure slot includes close to the sounding inner cavity Internal groove side wall and the external groove sidevall being oppositely arranged with the internal groove side wall, one end close to the vibrating diaphragm of the voice coil include close to described The medial surface of sounding inner cavity and the lateral surface being oppositely arranged with the medial surface, the distance etc. of the medial surface to the internal groove side wall In the lateral surface to the distance of the external groove sidevall.
4. microphone device according to claim 1, which is characterized in that the vibrational system further includes top dome, the top dome It is sticked and is fixed on the side far from the magnetic circuit system of the vibrating diaphragm;The top dome be equipped with through thereon and with the convex closure The matched through-hole of slot, the convex closure slot are arranged in the through-hole.
5. microphone device according to claim 4, which is characterized in that one far from the magnetic circuit system of the convex closure slot Side is flushed with the side far from the magnetic circuit system of the top dome.
6. microphone device according to claim 4, which is characterized in that the convex closure slot includes at least four and is spaced apart from each other Setting.
7. microphone device according to claim 6, which is characterized in that four convex closure slots, which are divided equally, to be arranged in the vibrating diaphragm Opposite sides.
8. 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.
9. microphone device according to claim 4, 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.
10. microphone device according to claim 9, which is characterized in that the microphone device further include fit in it is described auxiliary The elastic supporting member for supporting optical member of vibrating diaphragm is helped, the frame is fixed in described elastic supporting member for supporting optical member one end, and the other end is fixedly supported to the sound One end far from the top dome of circle.
CN201821305166.4U 2018-08-14 2018-08-14 Microphone device Active CN208798190U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821305166.4U CN208798190U (en) 2018-08-14 2018-08-14 Microphone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821305166.4U CN208798190U (en) 2018-08-14 2018-08-14 Microphone device

Publications (1)

Publication Number Publication Date
CN208798190U true CN208798190U (en) 2019-04-26

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ID=66205511

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821305166.4U Active CN208798190U (en) 2018-08-14 2018-08-14 Microphone device

Country Status (1)

Country Link
CN (1) CN208798190U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111405421A (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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111405421A (en) * 2019-12-27 2020-07-10 瑞声科技(新加坡)有限公司 Sound production device
CN111405421B (en) * 2019-12-27 2021-08-10 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

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