CN217363268U - Adjustable microphone core and microphone - Google Patents

Abstract

The utility model discloses a microphone core and a microphone with adjustable sound, wherein, the microphone core comprises a middle sleeve, a magnetic field component, a sound adjusting plate, a sound adjusting layer and a fastener, the middle sleeve is provided with a through cavity, and the inner wall of the cavity is provided with a positioning part; the magnetic field assembly is arranged in the cavity and is abutted against one side of the positioning part along the axial direction of the middle sleeve; the sound adjusting plate is arranged in the cavity and is abutted against the other side of the positioning part along the axial direction of the middle sleeve; the tuning layer is arranged in the cavity and clamped between the magnetic field assembly and the tuning board; the fastener is worn to locate the tuning layer and is connected between magnetic field subassembly and tuning board to fixed magnetic field subassembly and tuning board. The utility model discloses a magnetic field subassembly and tuning layer are connected firmly, and are convenient for install or dismantle the tuning layer to change the tuning layer of different density and obtain different tone qualities, realize the tuning, and, to the miaow core of producing different tone qualities, only need to change the tuning layer can, the commonality is good, and degree of standardization is high.

Description

Adjustable microphone core and microphone

Technical Field

The utility model belongs to the technical field of the microphone technique and specifically relates to a 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. The common microphone core is a moving-coil microphone core, namely a device for converting a sound signal into an electric signal by utilizing an electromagnetic induction phenomenon, in the related technology, a magnetic circuit component of the microphone core and a tuning paper are bonded and fixed through glue, on one hand, as the service life of the microphone increases, the magnetic circuit component and the tuning paper are easy to loosen, so that the normal pickup of the microphone is influenced, and noise is easy to generate; on the other hand, the spliced and fixed tuning paper can only be used once, residues are easily left on the microphone core after the tuning paper is torn off, the tuning paper is not convenient to replace, and the universality is poor.

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 connect firm, be convenient for change the miaow core of tuning layer with the tuning.

According to the utility model discloses miaow core of adjustable sound of first aspect embodiment, include: the middle sleeve is provided with a through cavity, and the inner wall of the cavity is provided with a positioning part; the magnetic field assembly is mounted in the cavity and abuts against one side of the positioning part along the axial direction of the middle sleeve; the sound adjusting plate is mounted in the cavity and abutted against the other side of the positioning part along the axial direction of the middle sleeve; the tuning layer is arranged in the cavity and clamped between the magnetic field assembly and the tuning plate; and the fastening piece penetrates through the tuning layer and is connected between the magnetic field component and the tuning board so as to fix the magnetic field component and the tuning board.

The technical scheme at least has the following beneficial effects: the magnetic field assembly and the sound adjusting plate are connected through the fastening piece, so that the magnetic field assembly and the sound adjusting plate are respectively abutted against two sides of the positioning part, and the magnetic field assembly and the sound adjusting plate are stably connected to the cavity of the middle sleeve by virtue of the interaction of the positioning part and the fastening piece, so that the magnetic field assembly is prevented from being loosened, and the microphone core can normally pick up sound and reduce the generation of noise; simultaneously, locate magnetic field subassembly and tuning board with the tuning layer clamp, rely on the interact of magnetic field subassembly and tuning board, can make the tuning layer firm and connect in the inner chamber of well cover, the not hard up condition can not appear, and be convenient for install or dismantle the tuning layer to change the tuning layer of different density and obtain different tone qualities, realize the tuning, and, to the miaow core of producing different tone qualities, only need change the tuning layer can, the commonality is good, and the standardization level is high.

According to some embodiments of the utility model, location portion sets up to the bulge loop, the bulge loop court the central line protrusion setting of well cover.

According to some embodiments of the utility model, follow the radial direction of well cover, the internal diameter of bulge loop is D1, the external diameter on tuning layer is D2, satisfies: d1 ═ D2.

According to some embodiments of the utility model, location portion includes a plurality of lugs, and is a plurality of the lug is located the coplanar and follows the circumference interval arrangement of well cover.

According to the utility model discloses a some embodiments, follow the axial direction of well cover, the height of location portion is H1, the thickness on tuning layer is H2, just the compressible deformation of tuning layer satisfies: h2 is more than or equal to H1.

According to some embodiments of the utility model, the tuning board is equipped with the mounting hole, the fastener is worn to locate the mounting hole, the one end butt of fastener in the tuning board deviates from one side on tuning layer, the other end with magnetic field subassembly threaded connection.

According to the utility model discloses a some embodiments, the tuning layer includes first damping cotton and damping paper, first damping cotton with damping paper follows the central line direction of well cover sets gradually, first damping cotton with damping paper presss from both sides and locates the magnetic field subassembly with between the tuning board.

According to the utility model discloses a some embodiments still include the visor, the visor install in well cover and cover are located the magnetic field subassembly, the visor is equipped with the second sound hole and demountable installation has the second damping cotton, the second damping cotton is located the visor deviates from one side of magnetic field subassembly.

According to the utility model discloses a some embodiments, the inner wall of cavity is equipped with a plurality of protruding muscle, protruding muscle is followed the axial setting of well cover is a plurality of protruding muscle is followed the circumference equipartition of well cover, magnetic field subassembly butt in protruding muscle, the magnetic field subassembly the inner wall of cavity and a plurality of form the sound chamber between the protruding muscle, well cover be equipped with the third sound hole of sound chamber intercommunication.

According to a second aspect of the present invention, a microphone includes the tunable microphone core of the first aspect.

The technical scheme at least has the following beneficial effects: the microphone adopts the tuning microphone core, wherein the microphone core connects the magnetic field assembly and the tuning board through the fastener, so that the magnetic field assembly and the tuning board are respectively abutted against two sides of the positioning part, and the magnetic field assembly and the tuning board are stably connected to the cavity of the middle sleeve by means of the interaction of the positioning part and the fastener, thereby avoiding the loosening of the magnetic field assembly, and further enabling the microphone core to normally pick up sound and reduce the generation of noise; simultaneously, locate magnetic field subassembly and tuning board with the tuning layer clamp, rely on the interact of magnetic field subassembly and tuning board, can make the tuning layer firm and connect in the inner chamber of well cover, the not hard up condition can not appear, and be convenient for install or dismantle the tuning layer, so that change the tuning layer of different density and obtain different tone qualities, realize the tuning, and, to the miaow core of producing different tone qualities, only need change the tuning layer can, the commonality is good, the part standardization level is high, effectively reduce the manufacturing cost of microphone.

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 microphone core in an embodiment of the present invention;

fig. 2 is an exploded view of the embodiment of the present invention;

fig. 3 is a cross-sectional view of the embodiment of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

fig. 5 is an exploded view of a magnetic field assembly according to an embodiment of the present invention;

fig. 6 is a schematic structural view of the middle sleeve in the embodiment of the present invention;

fig. 7 is an exploded view of the protective cover, the second damping cotton and the top cover according to the embodiment of the present invention.

Reference numerals:

a middle sleeve 100; a cavity 110; a positioning portion 120; a convex rib 130; a sound chamber 140; a third tone hole 150; a ring-shaped tone tuning paper 160;

a magnetic field assembly 200; an iron seat 210; the accommodation chamber 211; a threaded bore 212; a sizing block 220; a magnet 230; a core 240; a circuit board 250; an electric wire 251;

a sound-adjusting panel 300; a mounting hole 310; a first acoustic port 320;

a tuning layer 400; a first damping cotton 410; damping paper 420; a through-hole 430;

a fastener 500;

a protective cover 600; a second acoustic port 610; a second damping cotton 620; a groove 630; a top cover 640;

a sound chamber 700; a rubber shell 710;

a sound film 800; a toroidal moving coil 810.

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 orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in 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 and operated in a specific orientation, 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 7, a first aspect of the present invention provides a tuning core for a microphone, where the tuning core includes a middle sleeve 100, a magnetic field assembly 200, a tuning board 300, a tuning layer 400, and a fastener 500.

Referring to fig. 1 to 3, it can be understood that the middle sleeve 100 is a rotary structure, specifically, the middle sleeve 100 is 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 running through along the axial direction, an inner wall of the cavity 110 is provided with a positioning portion 120, the positioning portion 120 protrudes towards the central line of the middle sleeve 100, the positioning portion 120 does not block the cavity 110, the cavity 110 is divided into two mounting cavities by the positioning portion 120, the two mounting cavities may be different in size or same in size, the positioning portion 120 may be a structure such as a convex ring or a convex block, the positioning portion 120 and the middle sleeve 100 are an integrally formed structure, for example, a plastic part, and can be directly produced through an injection molding process, and are convenient to process.

Referring to fig. 1 to 6, it can be understood that the magnetic field assembly 200 is installed in the cavity 110 and abutted against the positioning portion 120, and specifically, the magnetic field assembly 200 is installed in an installation cavity with a large volume, generally, the magnetic field assembly 200 includes an iron seat 210, a sizing block 220, a magnet 230 and an iron core 240, the iron seat 210 is a revolving structure, a center line of the iron seat 210 coincides with a center line of the middle sleeve 100, one end of the iron seat 210 abuts against one side of the positioning portion 120, the iron seat 210 is provided with an accommodating cavity 211 with an opening facing to the other end, the sizing block 220, the magnet 230 and the iron core 240 are sequentially installed in the accommodating cavity 211 along the center line of the iron seat 210 and sequentially arranged in a direction away from the positioning portion 120, and a gap is left between peripheral walls of the sizing block 220, the magnet 230 and the iron core 240 and an inner wall of the accommodating cavity 211, so that a magnetic field can be generated in a circumferential direction of the iron core 240.

Referring to fig. 1 to 3, it can be understood that the tuning plate 300 is mounted in a mounting chamber having a small volume, the tuning plate 300 is provided in a circular plate structure, a center line of the tuning plate 300 coincides with a center line of the center cover 100, the tuning plate 300 abuts against the other side of the positioning portion 120, and a space for mounting the tuning layer 400 is left between the tuning plate 300 and one end of the iron holder 210 abutting against the positioning portion 120. Specifically, the tuning layer 400 is interposed between the iron seat 210 and the tuning plate 300, that is, the tuning layer 400 is interposed between the positioning portions 120, and the iron seat 210 and the tuning plate 300 abut against both sides of the tuning layer 400, respectively, thereby making the tuning plate 300 stably mounted.

Referring to fig. 1 to 3, it can be understood that, in general, the tuning layer 400 is provided with a through hole 430, a center line of the through hole 430 coincides with a center line of the middle sleeve 100, the fastener 500 may be a screw, a rivet, or the like, the fastener 500 is inserted through the tuning layer 400, and both ends of the fastener 500 are respectively connected with the iron base 210 and the tuning plate 300, so that the iron base 210 and the tuning plate 300 are respectively abutted against the positioning portion 120, thereby the magnetic field assembly 200 and the tuning plate 300 are tightly connected to the middle sleeve 100 under the interaction force of the fastener 500 and the positioning portion 120, and at the same time, the iron base 210 and the tuning plate 300 press the tuning layer 400, so that the tuning layer 400 is connected more stably, and the magnetic field assembly 200 and the tuning layer 400 are prevented from being loosened.

Referring to fig. 1 to 5, it can be understood that the iron base 210 and the tuning board 300 are each provided with a plurality of first sound holes 320, the first sound holes 320 may be circular holes, and the plurality of first sound holes 320 are arranged at intervals along the circumferential direction of the center line of the middle sleeve 100 so as to communicate the mounting cavities on both sides of the positioning portion 120 for the microphone to pick up sound.

The iron seat 210 and the sound adjusting plate 300 of the magnetic field assembly 200 are connected through the fastener 500, so that the iron seat 210 and the sound adjusting plate 300 are respectively abutted against two sides of the positioning part 120, and the magnetic field assembly 200 and the sound adjusting plate 300 are stably connected to the cavity 110 of the middle sleeve 100 by virtue of the interaction of the positioning part 120 and the fastener 500, so that the magnetic field assembly 200 is prevented from being loosened, and the microphone can normally pick up sound and reduce the noise; simultaneously, locate the tuning layer 400 clamp between magnetic field assembly 200 and tuning board 300, rely on the interact of magnetic field assembly 200 and tuning board 300, can make the tuning layer 400 firm connection in the inner chamber of well cover 100, the not hard up condition can not appear, and be convenient for install or dismantle tuning layer 400, so that change the tuning layer 400 of different density and obtain different tone qualities, realize the tuning, and, to the miaow core of producing different tone qualities, only need to change tuning layer 400 can, the commonality is good, the standardization level is high.

Referring to fig. 1 to 6, it can be understood that the positioning portion 120 is provided as a convex ring, the convex ring is provided to protrude toward the central line of the middle sleeve 100, and the convex ring is a circular ring, so that the contact area between the iron base 210 and the positioning portion 120 and the contact area between the sound adjusting plate 300 and the positioning portion 120 are increased, the supporting stability of the positioning portion 120 to the iron base 210 and the positioning portion 120 to the sound adjusting plate 300 is improved, and the magnetic field assembly 200 and the sound adjusting plate 300 are more stably and reliably mounted and are prevented from loosening.

Referring to fig. 3, it can be understood that, in the radial direction of the middle sleeve 100, the inner diameter of the convex ring is defined as D1, and the outer diameter of the tuning layer 400 is positioned as D2, so that: d1 is D2, and when the tuning layer 400 presss from both sides and locates between iron base 210 and the tuning board 300, the perisporium of tuning layer 400 can butt in the inner wall of bulge loop to there is not the clearance between tuning layer 400 and the bulge loop, can avoid the tuning layer 400 condition that becomes flexible in the miaow core use, avoids influencing the normal pickup of miaow core.

It is understood that the positioning portion 120 may be composed of a plurality of protrusions (not shown in the drawings), the protrusions are protruded toward the central line of the middle sleeve 100, the plurality of protrusions are located on the same plane perpendicular to the central line of the middle sleeve 100, the plurality of protrusions are arranged at intervals along the circumferential direction of the middle sleeve 100, generally speaking, the protrusions are uniformly distributed along the circumferential direction, the iron seat 210 and the tuning board 300 are positioned and supported by the plurality of protrusions, and the iron seat 210 and the tuning board 300 are uniformly stressed and stably mounted.

Referring to fig. 3, it can be understood that, along the axial direction of the middle sleeve 100, the height of the positioning portion 120 is defined as H1, and the thickness of the tuning layer 400 is defined as H2, which satisfies the following conditions: h2 is more than or equal to H1. Also, the tuning layer 400 can be compressively deformed in the axial direction of the middle jacket 100. For example, when the tuning layer 400 is sandwiched between the iron base 210 and the tuning plate 300, H1 is H2, and there is no gap between the tuning layer 400 and the iron base 210 and between the tuning layer 400 and the tuning plate 300, so that the tuning layer 400 does not become loose during use of the microphone core, and the connection is stable. Or H2 is more than H1, when the tuning layer 400 is clamped between the iron seat 210 and the tuning board 300, the tuning layer 400 is compressed and deformed under the clamping action of the iron seat 210 and the tuning board 300, so that two sides of the tuning layer 400 are respectively abutted against the iron seat 210 and the tuning board 300, the tuning layer 400 is not loosened during the use of the microphone core, and the connection is stable.

Referring to fig. 1 to 3, it can be understood that the tuning plate 300 is provided with a mounting hole 310 in the middle, the fastening member 500 is provided as a screw, one side of the iron seat 210 abutting against the positioning portion 120 is provided with a screw hole 212, the screw hole 212 is matched with the screw, the screw is inserted into the mounting hole 310 and the through hole 430 of the tuning layer 400 and is in threaded connection with the screw hole 212 of the iron seat 210, so that the fastening member 500 is connected with the magnetic field assembly 200, meanwhile, the head of the screw abuts against the side of the tuning plate 300 away from the tuning layer 400, and the tuning plate 300 and the iron seat 210 can abut against the positioning portion 120 by tightening the screw, so that the magnetic field assembly 200 and the tuning layer 400 are stably mounted. Unscrew the screw and take off the screw, can take out tuning board 300 and tuning layer 400, be convenient for the installation with dismantle tuning layer 400 to the tuning layer 400 of removable different density, in order to obtain the miaow core of different tone qualities. Meanwhile, only the tuning layer 400 needs to be replaced, and replacement is convenient, so that the universality of other parts is good and the standardization degree is high for producing the microphone cores with different tone qualities.

Referring to fig. 3 and 4, it can be understood that the tuning layer 400 includes a first damping cotton 410 and a damping paper 420, specifically, the first damping cotton 410 and the damping paper 420 are respectively disposed one by one, the first damping cotton 410 and the damping paper 420 are sequentially disposed along a central line direction of the middle sleeve 100, and the first damping cotton 410 and the damping paper 420 are sandwiched between the iron base 210 and the tuning board 300; the first damping cotton 410 abuts against the sound adjusting plate 300, and the damping paper 420 abuts against the iron base 210; or the first damping cotton 410 abuts against the iron seat 210 and the damping paper 420 abuts against the sound-adjusting plate 300. The first damping cotton 410 is arranged and matched with the damping paper 420, so that the whole tuning layer 400 can be compressed and deformed, and the tuning layer 400 is tightly close to the iron base 210 and the tuning board 300, and is stably and reliably mounted.

Referring to fig. 4, it can be understood that one first damping cotton 410 and two damping papers 420 may be provided, and the two damping papers 420 are respectively disposed at two sides of the first damping cotton 410, so that the other sides of the two damping papers 420 abut against the iron base 210 and the tuning board 300 respectively, and the whole tuning layer 400 can be compressed and deformed, so that the tuning layer 400 abuts against the iron base 210 and the tuning board 300, and the installation is stable and reliable.

Referring to fig. 2, 3 and 7, it can be understood that the microphone core further includes a protective cover 600, the protective cover 600 is mounted at one end of the middle sleeve 100 and covers the magnetic field assembly 200, for example, the protective cover 600 is screwed or snapped with the middle sleeve 100, the protective cover 600 is provided with a plurality of second sound holes 610, the second sound holes 610 may be circular holes, and the plurality of second sound holes 610 are uniformly distributed along the circumference of the middle sleeve 100 so that the microphone core can pick up sound. The protective cover 600 can also be detachably provided with the second damping cotton 620, for example, a groove 630 is formed in one side of the protective cover 600, which is away from the magnetic field assembly 200, the second damping cotton 620 is accommodated in the groove 630, the protective cover 600 is connected with a top cover 640, for example, the top cover 640 is in threaded connection with the protective cover 600, the top cover 640 abuts against the second damping cotton 620, that is, the second damping cotton 620 is clamped between the top cover 640 and the protective cover 600, so that the second damping cotton 620 is fixed, by arranging the second damping cotton 620, foreign matters in air can be filtered, failure of the microphone core caused by the foreign matters entering the microphone core is avoided, and reliability of the microphone core is improved.

Referring to fig. 3 and 6, it can be understood that the inner wall of the cavity 110 is provided with a plurality of ribs 130, the ribs 130 are arranged along the axial direction of the middle sleeve 100, the plurality of ribs 130 are uniformly distributed along the circumferential direction of the middle sleeve 100, the outer circumferential wall of the iron base 210 abuts against the ribs 130, when the iron base 210 is installed, the iron base 210 can be pre-fixed in the cavity 110 of the middle sleeve 100 through the friction force between the ribs 130 and the iron base 210, that is, the magnetic field assembly 200 is pre-fixed in the cavity 110 of the middle sleeve 100, and the magnetic field assembly 200 is further fixed by the fastener 500, so that the magnetic field assembly 200 can be stably installed in the middle sleeve 100, which is convenient to install. Form sound chamber 140 between the inner wall of two adjacent protruding muscle 130 and the periphery wall of iron stand 210, cavity 110, generally speaking, have a plurality of sound chambers 140, the periphery wall of well cover 100 is provided with the third sound hole 150 with sound chamber 140 intercommunication, third sound hole 150 can be round hole or quad slit etc. generally speaking, the outer wall bonding of well cover 100 has the annular tuning paper 160 that covers in third sound hole 150 to can be convenient for the miaow core pickup and the tone quality of accessible annular tuning paper 160 adjustment miaow core.

Referring to fig. 1 to 3, it can be understood that the microphone core further includes a sound chamber 700 and a sound film 800, the sound chamber 700 is detachably mounted at an end of the middle sleeve 100 away from the protective cover 600, for example, the sound chamber 700 is in threaded connection or snap connection with the middle sleeve 100, the sound chamber 700 is communicated with the cavity 110, and a rubber shell 710 is mounted on the periphery of the sound chamber 700, so that the vibration of the microphone core can be reduced, and the influence on sound pickup can be avoided.

Referring to fig. 1 to 3, it can be understood that the sound film 800 is installed in the cavity 110 and located between the protective cover 600 and the magnetic field assembly 200, one side of the sound film 800 facing the magnetic field assembly 200 is connected with a ring-shaped moving coil 810, one end of the ring-shaped moving coil 810 facing away from the sound film 800 is inserted into a gap between the peripheral wall of the iron core 240 and the inner wall of the accommodating cavity 211, the magnetic field assembly 200 is provided with a circuit board 250, the circuit board 250 is installed on the outer wall of the middle sleeve 100, the circuit board 250 is electrically connected with the ring-shaped moving coil 810, and the circuit board 250 is connected with a wire 251 for connecting with a loudspeaker.

The working principle is as follows: the sound waves emitted from the sound source respectively reach the peripheral wall of the protective cover 600, the peripheral wall of the middle sleeve 100 and the sound chamber 700, and respectively enter the sound chamber through the second sound hole 610 of the protective cover 600, the third sound hole 150 of the middle sleeve 100, the iron seat 210 and the first sound hole 320 of the tuning board 300, and due to different sound resistances at different positions, the sound waves enter the cavity through different sound holes with different attenuation conditions, so that a sound pressure difference exists at two sides of the sound film 800, the sound film 800 vibrates and drives the annular moving coil 810 to cut a magnetic induction line in the magnetic field of the magnetic field component 200, and then alternating voltages corresponding to the sound wave frequency are generated at two ends of the annular moving coil 810, so that the sound vibration signals are converted into electric signals, and are transmitted to a loudspeaker through the electric wire 251 to realize loudspeaker output.

The embodiment of the second aspect of the present invention provides a microphone, wherein the microphone is a microphone, and the microphone is just the microphone core, and the iron seat 210 of the magnetic field assembly 200 is connected to the sound-adjusting board 300 through the fastener 500, so that the iron seat 210 and the sound-adjusting board 300 are respectively abutted to two sides of the positioning portion 120, and the magnetic field assembly 200 and the sound-adjusting board 300 are stably connected to the cavity 110 of the middle sleeve 100 by the interaction between the positioning portion 120 and the fastener 500, thereby preventing the magnetic field assembly 200 from loosening, and enabling the microphone core to pick up sound normally and reduce the noise; simultaneously, locate the tuning layer 400 clamp between magnetic field assembly 200 and tuning board 300, rely on the interact of magnetic field assembly 200 and tuning board 300, can make the tuning layer 400 firm connection in the inner chamber of well cover 100, the not hard up condition can not appear, and be convenient for install or dismantle tuning layer 400, so that change the tuning layer 400 of different density and obtain different tone qualities, realize the tuning, and, to the miaow core of producing different tone qualities, only need to change tuning layer 400 can, the commonality is good, the standardization level is high, effectively reduce the manufacturing cost of microphone.

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 microphone core, comprising:

the middle sleeve is provided with a through cavity, and the inner wall of the cavity is provided with a positioning part;

the magnetic field assembly is mounted in the cavity and abuts against one side of the positioning part along the axial direction of the middle sleeve;

the sound adjusting plate is mounted in the cavity and abutted against the other side of the positioning part along the axial direction of the middle sleeve;

the tuning layer is arranged in the cavity and clamped between the magnetic field assembly and the tuning plate;

and the fastener penetrates through the tuning layer and is connected between the magnetic field component and the tuning board so as to fix the magnetic field component and the tuning board.

2. The toneable microphone core according to claim 1, wherein: the locating part is a convex ring which is arranged towards the center line of the middle sleeve in a protruding mode.

3. The toneable microphone core according to claim 2, wherein: in the radial direction of the middle sleeve, the inner diameter of the convex ring is D1, the outer diameter of the tuning layer is D2, and the following conditions are met: d1 ═ D2.

4. The tuning core of claim 1, wherein: the positioning part comprises a plurality of lugs, and the lugs are located on the same plane and are arranged at intervals along the circumferential direction of the middle sleeve.

5. A toneable microphone core according to any one of claims 1-4, wherein: along the axial direction of well cover, the height of location portion is H1, the thickness of tuning layer is H2, and the tuning layer compressible deformation satisfies: h2 is more than or equal to H1.

6. The tuning core of claim 1, wherein: the acoustic board is equipped with the mounting hole, the fastener wears to locate the mounting hole, the one end butt of fastener in the acoustic board deviates from one side on tuning layer, the other end with magnetic field component threaded connection.

7. The toneable microphone core according to claim 1, wherein: the tuning layer comprises first damping cotton and damping paper, the first damping cotton and the damping paper are arranged in sequence along the direction of the central line of the middle sleeve, and the first damping cotton and the damping paper are clamped and arranged between the magnetic field component and the tuning board.

8. The toneable microphone core according to claim 1, wherein: the protective cover is arranged on the middle sleeve and covers the magnetic field component, a second sound hole is formed in the protective cover, second damping cotton is detachably arranged on the protective cover, and the second damping cotton is located on one side, away from the magnetic field component, of the protective cover.

9. The toneable microphone core according to claim 1, wherein: the inner wall of the cavity is provided with a plurality of convex ribs, the convex ribs are arranged along the axial direction of the middle sleeve, the convex ribs are uniformly distributed along the circumferential direction of the middle sleeve, the magnetic field component is abutted against the convex ribs, a sound cavity is formed between the magnetic field component and the inner wall of the cavity and the convex ribs, and the middle sleeve is provided with a third sound hole communicated with the sound cavity.

10. A microphone, characterized by: a core for a tuning microphone according to any one of claims 1 to 9.

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