CN217509029U - Movable coil microphone core and microphone that can tune - Google Patents

Abstract

The utility model discloses a movable coil microphone core and a microphone capable of adjusting sound, wherein, the movable coil microphone core comprises a middle sleeve, a magnetic field component and a sound chamber, the middle sleeve is provided with a through cavity, and one end of the middle sleeve is provided with a sound film vibration cavity; the magnetic field assembly is arranged in the cavity and provided with a first sound cavity communicated with the sound film vibration cavity, and a first tuning layer is arranged between the first sound cavity and the sound film vibration cavity; the sound chamber is installed in the other end of well cover, and the sound chamber is equipped with the second sound chamber of intercommunication first sound chamber, is equipped with the second layer of tuning between second sound chamber and the first sound chamber. The utility model discloses a tone quality adjustable range of moving coil miaow core is wide, and the adjustability is good, can be fit for the occasion that different tone qualities required, and the suitability is good.

Description

Movable coil microphone core and microphone that can tune

Technical Field

The utility model belongs to the technical field of the microphone technique and specifically relates to a movable coil miaow core and microphone that can tune.

Background

Microphones are widely used in daily life, work and entertainment activities, such as speech, conference, singing, etc., and sound amplification can be realized by converting a sound signal into an electric signal through a microphone core and transmitting the electric signal to a loudspeaker connected with the microphone. A common microphone core is a moving-coil microphone core, which is a device for converting a sound signal into an electrical signal by using an electromagnetic induction phenomenon. In the correlation technique, the tuning structural design of moving coil miaow core is too simple, and adjustable range is narrow, and tone quality is single, causes sensitivity, pickup distance, tone quality effect etc. when using the microphone poor, is not suitable for the use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a movable coil miaow core that can tune, its tone quality adjustable range is wide, and the adjustability is good, can be fit for the occasion that different tone qualities required, and the suitability is good.

The utility model also provides a microphone of installing above-mentioned movable coil miaow core.

According to the utility model discloses a movable coil miaow core that can tune away of first aspect embodiment, include: the middle sleeve is provided with a through cavity, and one end of the middle sleeve is provided with a sound film vibration cavity; the magnetic field assembly is arranged in the cavity and is provided with a first sound cavity communicated with the sound film vibration cavity, and a first tuning layer is arranged between the first sound cavity and the sound film vibration cavity; the sound chamber is arranged at the other end of the middle sleeve and is provided with a second sound cavity communicated with the first sound cavity, and a second tuning layer is arranged between the second sound cavity and the first sound cavity.

The technical scheme at least has the following beneficial effects: through set up the first sound chamber that the intercommunication lies in the sound membrane vibration chamber of well cover one end in the magnetic field subassembly to the other end installation sound chamber of well cover sets up the second sound chamber that communicates first sound chamber, thereby form two back chamber structures, increase the stroke of sound wave air current, sound gets into the sound membrane of earlier process in the sound membrane vibration chamber after, then gets into first sound chamber and second sound chamber in proper order, the sound membrane receives the sound wave to strike and produces the vibration, and produce induced-current in magnetic field, realize the collection of sound. Simultaneously, set up first tuning layer between sound membrane vibration chamber and first sound chamber, set up second tuning layer between first sound chamber and second sound chamber, carry out the tuning to moving coil miaow core simultaneously through first tuning layer and second tuning layer, can tune out the moving coil miaow core of different tone qualities according to different first tuning layer and second tuning layer during the tuning, in order to be applicable to different occasions, thereby the adjustable scope of tone quality has been enlarged, the adjustability is good, and applicability and commonality have been improved.

According to some embodiments of the utility model, the magnetic field subassembly includes iron seat, parallels and baffle, the iron seat is equipped with the opening orientation the chamber that holds in sound membrane vibration chamber, the parallels install in hold the chamber, just the periphery wall of parallels with the inner wall that holds the chamber has the clearance, the baffle install in the parallels orientation the one end in sound membrane vibration chamber, the baffle with form between the diapire of iron seat first sound chamber, the baffle is equipped with the intercommunication sound membrane vibration chamber with the first sound hole in first sound chamber, the diapire of iron seat is equipped with the intercommunication first sound chamber with the second sound hole in second sound chamber.

According to the utility model discloses a some embodiments, the parallels are equipped with first location portion, the baffle is equipped with the locating hole, first location portion wears to locate the locating hole.

According to some embodiments of the utility model, the baffle deviates from one side in sound membrane vibration chamber is equipped with the mounting groove, first tuning layer hold in the mounting groove.

According to some embodiments of the invention, the periphery of the partition is provided with an annular plate, the annular plate is followed the thickness direction of the partition extends, the annular plate butt in the inner wall of the containing cavity.

According to some embodiments of the utility model, the magnetic field subassembly still includes magnet, iron core and hoop, magnet and iron core install in proper order in the baffle deviates from one side of parallels, the hoop install in the opening part of iron stand and support press in the baffle.

According to some embodiments of the invention, the baffle is equipped with the constant head tank towards one side of sound membrane vibration chamber, the magnet part hold in the constant head tank.

According to some embodiments of the utility model, well cover is equipped with and is located second location portion in the cavity, magnetic field component butt in one side of second location portion, magnetic field component is connected with the tuning board through the fastener, the tuning board is equipped with the third sound hole, the tuning board butt in the opposite side of second location portion, the second tuning layer clamp is located magnetic field component with between the tuning board.

According to some embodiments of the utility model, the second tuning layer includes the damping cotton and damping paper, the damping cotton with the damping paper stack in proper order the magnetic field subassembly with between the tuning board.

According to the utility model discloses microphone of second aspect embodiment includes: the toneable moving coil microphone core according to the embodiment of the first aspect.

The technical scheme at least has the following beneficial effects: the microphone is because the above-mentioned moving coil miaow core of installation, wherein, the moving coil miaow core is through setting up the first sound chamber that the intercommunication lies in the sound membrane vibration chamber of well cover one end in the magnetic field subassembly, and the other end installation sound room of well cover sets up the second sound chamber that communicates first sound chamber, thereby form two back cavity structures, increase the stroke of sound wave air current, sound gets into the sound membrane of earlier in the sound membrane vibration chamber after the back, then gets into first sound chamber and second sound chamber in proper order, the sound membrane receives the sound wave to assault and produces the vibration, and produce induced-current in magnetic field, realize the collection of sound. Simultaneously, set up first tuning layer between sound membrane vibration chamber and first sound chamber, set up second tuning layer between first sound chamber and second sound chamber, carry out the tuning to moving coil miaow core simultaneously through first tuning layer and second tuning layer, can tune out the moving coil miaow core of different tone qualities according to different first tuning layer and second tuning layer during the tuning, in order to be applicable to different occasions, thereby the adjustable scope of tone quality has been enlarged, the adjustability is good, and applicability and commonality have been improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

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 structural view of a moving coil microphone core in an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the moving coil core in the embodiment of the present invention;

fig. 3 is a schematic structural view of the middle sleeve in the embodiment of the present invention;

fig. 4 is a schematic top view of a partition board according to an embodiment of the present invention;

FIG. 5 is a schematic bottom structure view of the partition board in the embodiment of the present invention;

fig. 6 is a front sectional view of a partition plate according to an embodiment of the present invention.

Reference numerals are as follows:

a middle sleeve 100; a cavity 110; a diaphragm vibration chamber 120; a second positioning portion 130; a sound transmission hole 140; a filter cotton 150;

a magnetic field assembly 200; an iron seat 210; a bottom wall 211; a second acoustic port 212; a sizing block 220; a first positioning portion 221; a partition 230; a first acoustic port 231; positioning holes 232; a mounting groove 233; an annular plate 234; a positioning groove 235; a magnet 240; a core 250; an iron ring 260; a first acoustic chamber 270; a first tuning layer 280; a tuning plate 290; a third tone hole 291; a fastener 292;

a sound chamber 300; a second sound chamber 310; a second tuning layer 320; damping cotton 321; a damping paper 322;

the shock absorbing base 400.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the directional descriptions, such as the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

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.

Referring to fig. 1 to 6, a first aspect of the present invention provides a toneable moving coil core for a microphone, wherein the moving coil core includes a middle sleeve 100, a magnetic field assembly 200, and a sound chamber 300.

Referring to fig. 1 to 3, it can be understood that the middle sleeve 100 is configured as a rotary structure, specifically, the middle sleeve 100 is configured as a sleeve structure, a central line direction of the middle sleeve 100 is an axial direction of the middle sleeve 100, the middle sleeve 100 is provided with a cavity 110 penetrating along the axial direction, an upper end portion of the cavity 110 is provided with a sound film vibration cavity 120, a sound film is arranged in the sound film vibration cavity 120, and the sound film can vibrate due to sound wave impact. Generally speaking, the peripheral wall of the middle sleeve 100 is provided with a plurality of sound transmission holes 140, and the sound transmission holes 140 are communicated with the sound film vibration cavity 120 to pick up sound. And, the outer wall of the middle cover 100 is provided with a tuning paper covering the sound transmission hole 140 so as to adjust the sound collecting effect.

Referring to fig. 2, it can be understood that the magnetic field assembly 200 is installed in the cavity 110 and located below the sound diaphragm vibration cavity 120, generally speaking, the sound diaphragm is connected with a coil extending into the magnetic field assembly 200, and the sound diaphragm can drive the coil to move in the up-and-down direction when vibrating, so that the coil cuts the magnetic induction lines, and then generates current, converts sound waves into current, and realizes sound collection. Specifically, the magnetic field assembly 200 includes an iron seat 210, a sizing block 220 and a partition plate 230, the iron seat 210 is provided with an accommodating cavity with an upward opening, that is, the opening of the accommodating cavity faces the diaphragm vibration cavity 120, the longitudinal section of the iron seat 210 is U-shaped, the sizing block 220 is installed in the accommodating cavity, a gap is formed between the outer circumferential wall of the sizing block 220 and the inner wall of the accommodating cavity, the partition plate 230 is installed at the upper end of the sizing block 220, the circumferential wall of the partition plate 230 is attached to the inner wall of the accommodating cavity, so that a first sound cavity 270 is formed between the partition plate 230 and the bottom wall 211 of the iron seat 210, the partition plate 230 is provided with a plurality of first sound holes 231, the plurality of first sound holes 231 are arranged at equal intervals along the circumferential direction of the partition plate 230, the first sound holes 231 communicate with the diaphragm vibration cavity 120 and the first sound cavity 270, a first tuning layer 280 is arranged between the first sound cavity 270 and the diaphragm vibration cavity 120, the first tuning layer 280 may be damping paper, damping cotton or a combination of the first tuning layer 280, different tone qualities can be called out.

Referring to fig. 1 and 2, it can be understood that the sound chamber 300 is installed at the lower end of the middle sleeve 100, the sound chamber 300 has a second sound cavity 310 with an upward opening, the second sound cavity 310 is located below the magnetic field assembly 200, the bottom wall 211 of the iron base 210 is provided with a plurality of second sound holes 212, the plurality of second sound holes 212 are arranged at equal intervals along the circumferential direction of the iron base 210, so that the second sound cavity 310 is communicated with the first sound cavity 270, a second tuning layer 320 is arranged between the first sound cavity 270 and the second sound cavity 310, the second tuning layer 320 can be damping paper 322, damping cotton 321 or a combination of the two, and different sound qualities can be tuned by replacing the second tuning layer 320.

Through set up the first sound chamber 270 of the sound membrane vibration chamber 120 of intercommunication upper end in magnetic field assembly 200 to at the lower extreme installation sound chamber 300 of well cover 100 and set up the second sound chamber 310 of the first sound chamber 270 of intercommunication, thereby form two back chamber structures, increase the stroke of sound wave air current, sound gets into the sound membrane in the sound membrane vibration chamber 120 earlier after the back, then gets into first sound chamber 270 and second sound chamber 310 in proper order, the sound membrane receives the sound wave to strike and produces the vibration, and produce induced current in the magnetic field, realize the collection of sound. Meanwhile, the first tuning layer 280 is arranged between the sound film vibration cavity 120 and the first sound cavity 270, the second tuning layer 320 is arranged between the first sound cavity 270 and the second sound cavity 310, the moving coil microphone core is tuned through the first tuning layer 280 and the second tuning layer 320, and the moving coil microphone core with different tone qualities can be tuned according to different first tuning layer 280 and second tuning layer 320 during tuning, so that the tuning range of the tone qualities is expanded, the adjustability is good, and the applicability and the universality are improved.

Referring to fig. 2 and 4, it can be understood that a first positioning portion 221 is convexly disposed at an upper end of the sizing block 220, the first positioning portion 221 is configured as a columnar structure, a positioning hole 232 is disposed at a middle portion of the partition plate 230, a center line of the positioning hole 232 coincides with a center line of the sizing block 220, and the first positioning portion 221 is disposed through the positioning hole 232, so that the partition plate 230 is positioned, and the installation is convenient. Generally, the upper end surface of the back iron 220 is flush with the upper side surface of the spacer 230. Of course, the first positioning portion 221 and the positioning hole 232 of the partition 230 may be in an interference fit, and the connection is stable.

Referring to fig. 2 and 5, it can be understood that the lower side of the partition plate 230 is provided with a mounting groove 233, the mounting groove 233 is in an annular structure, that is, the mounting groove 233 is located on a side of the partition plate 230 away from the diaphragm vibration cavity 120, the first tuning layer 280 is also in an annular structure, and the first tuning layer 280 is accommodated in the mounting groove 233, so that a mounting space is provided for the first tuning layer 280, and the first tuning layer 280 can be fixed to the partition plate 230 in a glue adhering manner, and the connection is stable. Of course, the mounting groove 233 may be provided on the upper side of the partition plate 230, and in this case, the first tuning layer 280 is mounted on the upper side of the partition plate 230. The installation position of the mounting groove 233 is not specifically limited, and it is only necessary that the first tuning layer 280 is accommodated in the mounting groove 233, and then the first tuning layer 280 is located between the diaphragm vibration cavity 120 and the first sound cavity 270.

Referring to fig. 2 and 4, it can be understood that the annular plate 234 is disposed on the outer periphery of the partition plate 230, the upper end and the lower end of the annular plate 234 extend along the thickness direction of the partition plate 230, and after the partition plate 230 is mounted on the sizing block 220, the annular plate 234 abuts against the inner wall of the accommodating cavity, so that the partition plate 230 can be mounted more stably, noise generated due to the swinging of the combination of the partition plate 230 and the sizing block 220 is avoided, and the sound quality of the moving coil microphone core is improved.

Referring to fig. 2, it can be understood that the magnetic field assembly 200 further includes a magnet 240, an iron core 250 and an iron ring 260, the magnet 240 is fixedly mounted above the sizing block 220 and abuts against the upper side surface of the spacer 230, so that the spacer 230 is axially fixed relative to the sizing block 220 and the connection is stable; the iron core 250 is fixedly mounted above the magnet 240, the iron ring 260 is fixedly mounted at the upper end of the iron seat 210, and the lower end surface of the iron ring 260 abuts against the annular plate 234 of the partition plate 230, so that the partition plate 230 is axially positioned, and the partition plate 230 is more stably and reliably mounted. Generally, there is a gap between the inner wall of the iron ring 260 and the magnet 240 and the iron core 250, so that the diaphragm vibration cavity 120 is communicated with the first sound cavity 270, and the coil connected to the diaphragm extends into the magnetic field assembly 200. In addition, the upper end surface of the iron ring 260 is flush with the upper end surface of the iron core 250 to provide a sufficient vibration space for the sound diaphragm.

Referring to fig. 2 and 4, it can be understood that the upper side of the partition 230 is provided with a positioning groove 235, that is, the positioning groove 235 is located on one side of the partition 230 facing the diaphragm vibration chamber 120, the positioning groove 235 is configured in a concave structure, and the lower end of the magnet 240 is accommodated in the positioning groove 235, so that the magnet 240 is positioned, and the magnet 240 is conveniently installed.

Referring to fig. 2 and 3, it can be understood that the middle sleeve 100 is provided with a second positioning portion 130, the second positioning portion 130 is located in the cavity 110, the second positioning portion 130 protrudes toward the central line of the middle sleeve 100, meanwhile, the second positioning portion 130 does not block the cavity 110, and the cavity 110 is divided into two mounting cavities by the second positioning portion 130, wherein the mounting cavity at the upper end is larger, and the mounting cavity at the lower end is smaller. The second positioning portion 130 may be a convex ring or a plurality of protrusions spaced along the circumferential direction of the middle sleeve 100, and the second positioning portion 130 and the middle sleeve 100 are an integrally formed structure, for example, an integrally formed plastic part, which can be directly produced by an injection molding process, and is convenient to process.

Referring to fig. 2, it can be understood that the magnetic field assembly 200 is mounted in the mounting cavity on the upper side of the second positioning portion 130, and the magnetic field assembly 200 abuts against the upper end surface of the second positioning portion 130, specifically, the lower end surface of the iron base 210 abuts against the upper end surface of the second positioning portion 130, the iron base 210 is connected with the tuning plate 290 through the fastener 292, the tuning plate 290 is mounted in the mounting cavity on the lower side of the second positioning portion 130, the tuning plate 290 is provided with a circular plate structure, the center line of the tuning plate 290 coincides with the center line of the middle sleeve 100, the tuning plate 290 abuts against the lower end surface of the second positioning portion 130, the fastener 292 is provided with a screw, the bottom wall 211 of the iron base 210 is provided with a screw hole for fitting the screw, and in general, the tuning plate 290 is provided with a through hole for the rod portion of the screw to pass through. Therefore, the fastening member 292 can penetrate through the through hole of the tuning board 290 and then be in threaded connection with the screw hole of the iron base 210, so that the iron base 210 and the tuning board 290 are respectively abutted against two sides of the second positioning portion 130, and under the interaction of the fastening member 292 and the second positioning portion 130, the magnetic field assembly 200 and the tuning board 290 are fastened and connected to the middle sleeve 100, the connection is stable and reliable, and the magnetic field assembly 200 is prevented from loosening.

Referring to fig. 2, it is understood that the tuning plate 290 is provided with a plurality of third tone holes 291, and the plurality of third tone holes 291 are arranged at equal intervals in the circumferential direction of the tuning plate 290 so as to communicate the first tone chamber 300 with the second tone chamber 300. Second tuning layer 320 presss from both sides and locates between the diapire 211 of tuning board 290 and iron stand 210, sticiss second tuning layer 320 through iron stand 210 and tuning board 290, can make second tuning layer 320 connect more firmly, avoids second tuning layer 320 not hard up, makes the production that the moving coil miaow core can normally pick up the sound and noise abatement. Meanwhile, the second tuning layer 320 is fixed by the fastening piece 292 and the iron base 210 in a threaded connection mode, so that the second tuning layer 320 can be conveniently detached, different tone qualities can be obtained by replacing the second tuning layers 320 with different densities, and tuning is achieved.

Referring to fig. 2, it can be understood that the second tuning layer 320 includes damping cotton 321 and damping paper 322, and specifically includes two damping cotton 321 and one damping paper 322, which are sequentially stacked between the iron base 210 and the tuning board 290 along the axial direction of the middle sleeve 100, wherein the two damping cotton 321 are located at the lower side of the damping paper 322, the damping paper 322 abuts against the iron base 210, and the lowest damping cotton 321 abuts against the tuning board 290. Because the damping cotton 321 has a certain deformation amount, the damping cotton 321 and the damping paper 322 are arranged, so that the whole second tuning layer 320 can be compressed and deformed, the second tuning layer 320 is tightly close to the iron base 210 and the tuning board 290, the installation is stable and reliable, and the second tuning layer 320 is prevented from loosening.

Referring to fig. 1 and 2, it will be appreciated that to avoid damage to the magnetic field assembly 200, the side of the diaphragm vibration chamber 120 facing away from the magnetic field assembly 200 is removably fitted with a filter cotton 150. When the moving coil miaow core pickup, the foreign matter in the filter pulp 150 can the filtered air, avoids the foreign matter to get into in the moving coil miaow core and leads to magnetic field assembly 200 trouble, improves the reliability of moving coil miaow core.

Referring to fig. 1 and 2, it can be understood that a shock absorbing base 400 is further disposed on the outer side of the sound chamber 300, and the shock absorbing base 400 is a rubber base, so that the moving coil microphone core can be effectively buffered when being collided, the diaphragm of the moving coil microphone core is prevented from vibrating when being collided, and noise is prevented from being generated.

The embodiment of the second aspect of the utility model provides a microphone, use above-mentioned moving coil miaow core, the microphone is owing to adopt above-mentioned moving coil miaow core, in the moving coil miaow core, first sound chamber 270 through the sound membrane vibration chamber 120 that sets up the intercommunication upper end in magnetic field assembly 200, and install sound chamber 300 and set up the second sound chamber 310 of the first sound chamber 270 of intercommunication at the lower extreme of well cover 100, thereby form two back cavity structures, increase the stroke of sound wave air current, sound gets into the sound membrane of earlier through in sound membrane vibration chamber 120 after, then get into first sound chamber 270 and second sound chamber 310 in proper order, the sound membrane receives the sound wave to strike and produces the vibration, and produce induced-current in magnetic field, realize the collection of sound. Meanwhile, the first tuning layer 280 is arranged between the sound film vibration cavity 120 and the first sound cavity 270, the second tuning layer 320 is arranged between the first sound cavity 270 and the second sound cavity 310, the moving coil microphone core is tuned through the first tuning layer 280 and the second tuning layer 320, and the moving coil microphone core with different tone qualities can be tuned according to different first tuning layer 280 and second tuning layer 320 during tuning, so that the tuning range of the tone qualities is expanded, the adjustability is good, and the applicability and the universality are improved.

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

Claims (10)

1. A toneable moving coil microphone core, comprising:

the middle sleeve is provided with a through cavity, and one end of the middle sleeve is provided with a sound film vibration cavity;

the magnetic field assembly is arranged in the cavity and is provided with a first sound cavity communicated with the sound film vibration cavity, and a first tuning layer is arranged between the first sound cavity and the sound film vibration cavity;

the sound chamber is arranged at the other end of the middle sleeve and is provided with a second sound cavity communicated with the first sound cavity, and a second tuning layer is arranged between the second sound cavity and the first sound cavity.

2. The toneable moving coil microphone core according to claim 1, wherein: the magnetic field subassembly includes iron stand, parallels and baffle, the iron stand is equipped with the opening orientation the chamber that holds of sound membrane vibration chamber, the parallels install in hold the chamber, just the periphery wall of parallels with the inner wall that holds the chamber has the clearance, the baffle install in the parallels orientation the one end of sound membrane vibration chamber, the baffle with form between the diapire of iron stand first sound chamber, the baffle is equipped with the intercommunication sound membrane vibration chamber with the first sound hole in first sound chamber, the diapire of iron stand is equipped with the intercommunication first sound chamber with the second sound hole in second sound chamber.

3. The toneable moving coil microphone core according to claim 2, wherein: the sizing block is provided with a first positioning part, the partition board is provided with a positioning hole, and the first positioning part penetrates through the positioning hole.

4. The toneable moving coil microphone core according to claim 2, wherein: the baffle deviates from one side in sound membrane vibration chamber is equipped with the mounting groove, first tuning layer hold in the mounting groove.

5. The toneable moving coil microphone core according to claim 2, wherein: the periphery of baffle is equipped with the annular plate, the annular plate is followed the thickness direction of baffle extends, the annular plate butt in the inner wall of holding the chamber.

6. The toneable moving coil microphone core according to claim 2 or 5, wherein: the magnetic field component further comprises a magnet, an iron core and an iron ring, the magnet and the iron core are sequentially installed on one side, deviating from the spacer, of the partition plate, and the iron ring is installed at the opening of the iron base and abuts against the partition plate.

7. The toneable moving coil microphone core according to claim 6, wherein: one side of the partition board facing the sound film vibration cavity is provided with a positioning groove, and the magnet part is accommodated in the positioning groove.

8. The toneable moving coil microphone core according to claim 1, wherein: the middle sleeve is provided with a second positioning portion located in the cavity, the magnetic field component abuts against one side of the second positioning portion, the magnetic field component is connected with a sound adjusting plate through a fastener, the sound adjusting plate is provided with a third sound hole, the sound adjusting plate abuts against the other side of the second positioning portion, and the second sound adjusting layer is clamped between the magnetic field component and the sound adjusting plate.

9. The toneable moving coil microphone core according to claim 8, wherein: the second tuning layer comprises damping cotton and damping paper, and the damping cotton and the damping paper are sequentially stacked between the magnetic field assembly and the tuning boards.

10. A microphone, characterized by: a toneable moving coil core comprising any one of claims 1 to 9.

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