CN211792024U

CN211792024U - Moving-coil microphone

Info

Publication number: CN211792024U
Application number: CN202020667750.5U
Authority: CN
Inventors: 黄文贵; 蔡瑞霖; 黄健冬; 张汉晨
Original assignee: Minami Electroacoustic Co Ltd
Current assignee: Minami Electroacoustic Co Ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-10-27
Anticipated expiration: 2030-04-27

Abstract

The utility model discloses a moving coil microphone, include: the sound chamber is positioned below the accommodating chamber, and the accommodating chamber is communicated with the sound chamber through a second exhaust hole; the voice coil assembly is arranged in the accommodating cavity, and the voice coil assembly is abutted to the side wall and the bottom wall of the accommodating cavity. The microphone can stabilize the tone of the microphone by slowing down the circulation of part of gas.

Description

Moving-coil microphone

Technical Field

The utility model relates to an electroacoustic equipment field, in particular to moving-coil microphone.

Background

The moving coil microphone is a microphone made by utilizing the electromagnetic induction principle, and the working principle is as follows: when external sound is received, force generated by sound waves acts on the diaphragm to cause the diaphragm to vibrate and drive the voice coil to vibrate, the voice coil vibrates in a magnetic field to generate electromotive force, and sound signals are converted into electric signals. In the process, the vibration of the diaphragm can enable a part of gas in the microphone to be discharged to the outside from the exhaust hole, so that the gas in the sound chamber is circulated, and the sound quality of the microphone is improved; at present, the sound timbre of the picked-up sound is not stable enough because the air rapidly flows out from the sound chamber in some conventional moving coil microphones.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a moving-coil microphone can be through the circulation that slows down partly gaseous, stabilizes the tone quality of microphone.

According to the utility model discloses moving coil microphone, include: the sound chamber is positioned below the accommodating chamber, the accommodating chamber is communicated with the sound chamber through a second exhaust hole, and the first channel is communicated with the second exhaust hole; the voice coil assembly is arranged in the accommodating cavity, and the voice coil assembly is abutted to the side wall and the bottom wall of the accommodating cavity.

According to the utility model discloses moving coil microphone has following beneficial effect at least: through setting up first passageway and first exhaust hole, make the vibration of the interior partial air of holding chamber through voice coil loudspeaker voice coil subassembly discharge from the external world from first exhaust hole, through setting up second passageway and second exhaust hole, make the vibration of the interior another partial air of holding chamber through voice coil loudspeaker voice coil subassembly guide to the sound indoor of relative confined from the second exhaust hole, the mechanical wave that the air carried vibrates in the confined sound indoor, and can not directly flow, thereby delay the circulation of some gas, with the sound tone that stable microphone picked up.

According to the utility model discloses a some embodiments, the casing includes outer shell and pickup shell, outer shell with the connection can be dismantled to the pickup shell to make things convenient for the assembly of the two, the holding cavity is located outer shell, the sound room is located the pickup shell, the second exhaust hole is located the bottom of outer shell has made things convenient for the assembly of pickup shell and outer shell.

According to some embodiments of the utility model, the voice coil loudspeaker voice coil subassembly includes diaphragm, coil, magnetic pillar and voice coil loudspeaker voice coil shell, the magnetic pillar with the coil is located in the voice coil loudspeaker voice coil shell, the coil casing is located the magnetic pillar, the diaphragm is located the top of coil and with the coil links to each other, the voice coil loudspeaker voice coil shell with the lateral wall and the diapire butt of holding chamber. The sound wave is transmitted to the diaphragm, makes the diaphragm vibrate, drives the coil vibration, cuts the magnetic field of magnetism post, takes place the electromagnetic induction effect with the magnetic field of magnetism post, produces induced-current in the coil, makes the sound wave convert the signal of telecommunication into, and meanwhile, the diaphragm vibration can drive the whole vibration of voice coil loudspeaker voice coil subassembly, makes partial circulation of air in the holding chamber to first exhaust hole and second exhaust hole, realizes the effect of stabilizing the microphone tone quality.

According to the utility model discloses a some embodiments still include the upper cover, the casing is equipped with the upper shed, the upper cover is located the upper shed just is used for the lid to close the upper shed, the upper cover is equipped with the sound hole, the voice coil loudspeaker voice coil subassembly is located the below of upper cover. The upper opening is covered by the upper cover, so that the voice coil assembly is convenient to fix and assemble, and the upper opening is also convenient to open to maintain the voice coil assembly.

According to some embodiments of the utility model, the top of going into the sound hole is equipped with the sponge piece. Foreign matters such as dust and spray are filtered by arranging the sponge sheet, so that the dust and spray are prevented from contacting the diaphragm, the service life of the diaphragm is prolonged, the vibration quality of the diaphragm is improved, and the sound quality of the microphone is improved.

According to the utility model discloses a some embodiments, outer cover shell is equipped with first clamping groove, and through setting up first clamping groove, it is fixed that the convenience is inlayed the control element of microphone, improves the compact structure nature of microphone.

According to the utility model discloses a some embodiments still include the lower cover, the lower cover is equipped with the holding recess, the lower cover is located pickup shell, the lateral wall of pickup shell with the inside wall butt of holding recess. The lower cover is used for protecting and structurally consolidating the pickup shell, and prevents that sound wave vibration in the sound chamber receives external influence to improve the pickup tone quality of microphone.

According to some embodiments of the present invention, the pickup shell is provided with a first receiving channel communicated with the first caulking groove, and the lower cover is provided with a second receiving channel communicated with the first receiving channel; and a second clamping groove is formed in the bottom surface of the lower cover. Through setting up the second clamping groove, conveniently inlay fixedly to the control element of microphone, through setting up first holding passageway and second holding passageway, conveniently accomodate the connecting wire who connects control element, improve the compact structure nature of microphone.

According to the utility model discloses a some embodiments, the lateral wall of lower cover is equipped with the anti-skidding rib, improves the coefficient of friction of lower cover lateral wall, and the convenience is dismantled the lower cover.

According to some embodiments of the invention, the first vent is provided with a first tuning paper; the second exhaust hole is equipped with the second tuning paper, and tuning paper density is even, and the bleeder vent density is average, can have the damping effect to the sound wave, effectively suppresses sound and builds the ripples, improves its audio characteristic, from this, can be improved by the tuning paper from the sound wave that first exhaust hole and second exhaust hole wore out, has improved the sound wave quality in the holding cavity and the sound chamber to improve the tone quality of microphone.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of a moving-coil microphone according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of area A-A shown in FIG. 1;

fig. 3 is an exploded view of a moving coil microphone shown in fig. 1;

fig. 4 is a schematic diagram of an outer casing of the moving-coil microphone shown in fig. 1;

fig. 5 is a schematic view of a voice coil assembly of a moving-coil microphone shown in fig. 1.

Reference numerals:

the outer casing 100, the accommodating chamber 110, the first channel 120, the first exhaust hole 130, the second channel 140, the second exhaust hole 150, and the first clamping groove 160;

a sound pickup shell 200 and a sound chamber 210;

voice coil assembly 300, diaphragm 310, coil 320, washer 330, magnetic post 340, inner collar 350, voice coil housing 360;

an upper cover 400, a sound inlet 410 and a sponge sheet 420;

a lower cover 500, a receiving groove 510, a second clamping groove 520; the sound mixing paper comprises a first sound mixing paper 610, a second sound mixing paper 620, a first circuit board 710, a second circuit board 720 and a connecting line 730.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper and lower directions, is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1, fig. 2 and fig. 4, a moving-coil microphone according to an embodiment of the present invention includes: the sound box comprises a shell, wherein an accommodating chamber 110, a first channel 120, a second channel 140 and a sound chamber 210 are arranged in the shell, the first channel 120 and the second channel 140 are both communicated with the accommodating chamber 110, the side wall of the shell is provided with a first exhaust hole 130 communicated with the second channel 140, the sound chamber 210 is positioned below the accommodating chamber 110, the accommodating chamber 110 is communicated with the sound chamber 210 through a second exhaust hole 150, and the first channel 120 is communicated with the second exhaust hole 150; the voice coil assembly 300 is disposed in the accommodating chamber 110, and the voice coil assembly 300 abuts against the side wall and the bottom wall of the accommodating chamber 110.

Specifically, by providing the first channel 120 and the first vent hole 130, a part of air in the accommodating chamber 110 is discharged to the outside from the first vent hole 130 through the vibration of the voice coil assembly 300, and by providing the second channel 140 and the second vent hole 150, another part of air in the accommodating chamber 110 is guided to the relatively closed sound chamber 210 from the second vent hole 150 through the vibration of the voice coil assembly 300, and the mechanical waves carried by the air vibrate in the closed sound chamber 210 without directly flowing out, so that the circulation of a part of air is delayed, and the sound tone picked up by the microphone is stabilized.

The voice coil assembly 300 may be a conventional microphone coil assembly on the market, sound waves are transmitted to the diaphragm 310, the vibration of the diaphragm 310 causes air in the accommodating cavity to flow, the sound waves are also transmitted to the sound chamber 210 and the outside of the housing along with the flowing air, a part of the sound waves vibrate in the sound chamber 210 and return to the diaphragm 310 after multiple reflections, so that the sound color picked up by the diaphragm 310 is stable and smooth.

In some embodiments of the present invention, as shown in fig. 4, a plurality of ribs are disposed in the accommodating chamber 110 at intervals, so as to form a plurality of first channels 120 and a plurality of second channels 140, and the number of the first channels 120 and the second channels 140 can be correspondingly set according to practical applications, which is not limited herein.

In some embodiments of the present invention, as shown in fig. 2 and 3, the casing includes an outer casing 100 and a sound pickup casing 200, the outer casing 100 and the sound pickup casing 200 are detachably connected to facilitate the assembly of the two, the accommodating chamber 110 is disposed in the outer casing 100, the sound chamber 210 is disposed in the sound pickup casing 200, and the second air vent 150 is disposed in the bottom of the outer casing 100 to facilitate the assembly of the sound pickup casing 200 and the outer casing 100.

In some embodiments of the present invention, as shown in fig. 5, the voice coil assembly 300 includes a diaphragm 310, a coil 320, a magnetic pillar 340 and a voice coil housing 360, the magnetic pillar 340 and the coil 320 are disposed in the voice coil housing 360, the magnetic pillar 340 is disposed on the coil 320, the diaphragm 310 is disposed above the coil 320 and connected to the coil 320, and the voice coil housing 360 abuts against the sidewall and the bottom wall of the accommodating chamber 110. The sound wave is transmitted to the diaphragm 310, so that the diaphragm 310 vibrates to drive the coil 320 to vibrate, the magnetic field of the magnetic column 340 is cut, an electromagnetic induction effect is generated between the magnetic field of the magnetic column 340 and the induced current generated in the coil 320, the sound wave is converted into an electric signal, meanwhile, the diaphragm 310 vibrates to drive the voice coil assembly 300 to vibrate integrally, part of air in the accommodating chamber 110 circulates to the first exhaust hole 130 and the second exhaust hole 150, and the effect of stabilizing the sound color of the microphone is achieved.

In addition, as shown in fig. 5, a washer 330 may be sleeved at the coil 320, so that the outer sidewall of the washer 330 is in clearance fit with the voice coil housing 360 to limit the coil 320 from laterally swinging, and an inner collar 350 is disposed below the washer 330 to support the washer 330 and limit the magnetic column 340, thereby preventing the magnetic column 340 from laterally swinging.

In some embodiments of the present invention, as shown in fig. 2 and 3, the voice coil module further includes an upper cover 400, the housing has an upper opening, the upper cover 400 is disposed on the upper opening and is used for covering the upper opening, the upper cover 400 is provided with a sound inlet 410, and the voice coil module 300 is disposed below the upper cover 400. The upper opening is covered by arranging the upper cover 400, so that the voice coil assembly 300 is convenient to fix and assemble, and the upper opening is also convenient to open to carry out maintenance operation on the voice coil assembly 300.

Further, in some embodiments of the present invention, as shown in fig. 1, 2 and 3, a sponge sheet 420 is disposed above the sound inlet 410. Foreign substances such as dust and spray are filtered by the sponge sheet 420, so that the dust and spray are prevented from contacting the diaphragm 310, the service life of the diaphragm 310 is prolonged, the vibration quality of the diaphragm 310 is improved, and the sound quality picked up by the microphone is improved.

In some embodiments of the present invention, as shown in fig. 1, fig. 2 and fig. 3, the present invention further includes a lower cover 500, the lower cover 500 is provided with an accommodating groove 510, the pickup shell 200 is sleeved with the lower cover 500, and the sidewall of the pickup shell 200 abuts against the inner sidewall of the accommodating groove 510. The lower cover 500 is used for protecting and structurally consolidating the sound pickup case 200, preventing sound wave vibration in the sound chamber 210 from being affected by the outside, and thus improving the sound pickup quality of the microphone.

Further, in some embodiments of the present invention, as shown in fig. 3 and 4, the outer casing 100 is provided with a first clamping groove 160, so that the control element of the microphone can be easily embedded and fixed by providing the first clamping groove 160, thereby improving the compactness of the microphone.

Further, in some embodiments of the present invention, as shown in fig. 2, the sound-collecting shell 200 is provided with a first receiving channel communicated with the first embedding groove 160, and the lower cover 500 is provided with a second receiving channel communicated with the first receiving channel; the bottom surface of the lower cover 500 is provided with a second catching groove 520. Through setting up second clamping groove 520, the control element to the microphone is conveniently inlayed fixedly, through setting up first holding passageway and second holding passageway, conveniently accomodates the connecting wire who connects control element, improves the compact structure nature of microphone. Specifically, as shown in fig. 2, after the lower cover 500 and the sound-collecting housing 200 are engaged, the first receiving channel and the second receiving channel are formed to correspond to each other to form a channel for receiving the connecting wire 730.

Further, in some embodiments of the present invention, as shown in fig. 2, a first circuit board 710 is embedded on the first embedding groove 160, a second circuit board 720 is embedded on the second embedding groove 520, the first circuit board 710 and the second circuit board 720 are electrically connected through a connection line 730, the connection line 730 is disposed in the first accommodating channel and the second accommodating channel, wherein the first circuit board 710 is electrically connected to the coil 320 to process the induced current picked up by the coil 320, a plurality of connection contacts are disposed on the second circuit board 720, and the second circuit board 720 is electrically connected to the power supply of the microphone through the connection contacts, so that the power supply can supply power to the microphone.

In some embodiments of the present invention, the outer sidewall of the lower cover 500 is provided with anti-slip ribs, which improves the friction coefficient of the outer sidewall of the lower cover 500 and facilitates the disassembly of the lower cover 500; as shown in fig. 2, lower cover 500 is in clearance fit with sound pickup case 200, and the bottom of lower cover 500 is provided with bolts, so that lower cover 500, sound pickup case 200 and second circuit board 720 are fixed together by bolts, and the fixation of lower cover 500 is more stable; it is easy to think that in some embodiments, the receiving groove 510 may also be provided with an internal thread, and the sound-collecting housing 200 is provided with an external thread matching with the internal thread, so as to achieve the effect of quickly detaching the cover 500.

In some embodiments of the present invention, as shown in fig. 2, the first vent 130 is provided with a first tuning paper 610; second exhaust hole 150 is equipped with second tuning paper 620, and tuning paper density is even, and the bleeder vent is sparse and dense average, can have the damping effect to the sound wave, effectively suppresses the sound and builds the ripples, improves its audio characteristics, and from this, the sound wave of wearing out from first exhaust hole 130 and second exhaust hole 150 can be improved by the tuning paper, has improved the sound wave quality in the holding cavity and the sound room 210 to improve the tone quality of microphone.

The present embodiment has been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the present invention.

Claims

1. A moving coil microphone, comprising:

the sound box comprises a shell, wherein an accommodating chamber (110), a first channel (120), a second channel (140) and a sound chamber (210) are arranged in the shell, the first channel (120) and the second channel (140) are communicated with the accommodating chamber (110), a first exhaust hole (130) communicated with the second channel (140) is formed in the side wall of the shell, the sound chamber (210) is located below the accommodating chamber (110), the accommodating chamber (110) is communicated with the sound chamber (210) through a second exhaust hole (150), and the first channel (120) is communicated with the second exhaust hole (150);

the voice coil assembly (300) is arranged in the accommodating chamber (110), and the voice coil assembly (300) is abutted to the side wall and the bottom wall of the accommodating chamber (110).

2. A moving coil microphone according to claim 1,

the casing includes outer shell (100) and pickup shell (200), outer shell (100) with pickup shell (200) can be dismantled the connection, holding chamber (110) are located outer shell (100), sound chamber (210) are located pickup shell (200), second exhaust hole (150) are located the bottom of outer shell (100).

3. A moving coil microphone according to claim 1 or 2,

voice coil assembly (300) includes diaphragm (310), coil (320), magnetic pillar (340) and voice coil shell (360), magnetic pillar (340) with coil (320) are located in voice coil shell (360), coil (320) cover is located magnetic pillar (340), diaphragm (310) are located the top of coil (320) and with coil (320) link to each other, voice coil shell (360) with the lateral wall and the diapire butt of holding chamber (110).

4. A moving coil microphone according to claim 1 or 2,

still include upper cover (400), the casing is equipped with the upper shed, upper cover (400) are located the upper shed just is used for the lid to close the upper shed, upper cover (400) are equipped with into sound hole (410), voice coil assembly (300) are located the below of upper cover (400).

5. A moving coil microphone according to claim 4,

a sponge sheet (420) is arranged above the sound inlet hole (410).

6. A moving coil microphone according to claim 2,

still include lower cover (500), lower cover (500) are equipped with holding groove (510), lower cover (500) cover is located pickup shell (200), the lateral wall of pickup shell (200) with the inside wall butt of holding groove (510).

7. A moving coil microphone according to claim 6,

the outer sleeve shell (100) is provided with a first clamping groove (160).

8. A moving coil microphone according to claim 7,

the sound pickup shell (200) is provided with a first accommodating channel communicated with the first clamping groove (160), and the lower cover (500) is provided with a second accommodating channel communicated with the first accommodating channel; the bottom surface of the lower cover (500) is provided with a second clamping groove (520).

9. A moving coil microphone according to claim 6 or 8,

the outer side wall of the lower cover (500) is provided with anti-slip ribs.

10. A moving coil microphone according to claim 1,

the first air exhaust hole (130) is provided with a first tuning paper (610); and the second air vent (150) is provided with a second tone paper (620).