CN214205839U

CN214205839U - Microphone core and moving-coil microphone

Info

Publication number: CN214205839U
Application number: CN202120204835.4U
Authority: CN
Inventors: 王久居
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2021-09-14
Anticipated expiration: 2031-01-25

Abstract

The utility model discloses a miaow core and moving coil microphone, include: a housing including a sound generating portion and a sound chamber portion; the sound forming component comprises a magnet and an annular diaphragm; the buffer assembly comprises a main shell, a main annular elastic ring and a main cylinder body, wherein the inner peripheral part of the main shell is connected with the outer peripheral part of the main cylinder body through the main annular elastic ring, a main movable cavity is arranged between the main shell and the main cylinder body, the main cylinder body is movably arranged in the main movable cavity, a sound chamber part is arranged in the main cylinder body, the outer wall of the sound chamber part is attached to the inner wall of the main cylinder body, and the main annular elastic ring is used for resetting the main cylinder body; and a fixing member. After the microphone core collides, the main cylinder body vibrates in the main movable cavity, the sound chamber part also vibrates, and under the action of the main annular elastic ring, the main cylinder body is reset, the vibration of the sound chamber part is reduced, the vibration of the annular diaphragm is reduced, and the noise generated by collision can be reduced.

Description

Microphone core and moving-coil microphone

Technical Field

The utility model relates to a microphone technical field, in particular to miaow core and moving coil microphone.

Background

A moving-coil microphone is a device that converts sound into an electrical signal. The moving-coil microphone is made by utilizing the phenomenon of electromagnetic induction, when sound waves make the diaphragm vibrate, the voice coil connected to the diaphragm vibrates together, the voice coil vibrates in a magnetic field, induced current is generated, the magnitude and the direction of the induced current change, the changed amplitude and frequency are determined by the sound waves, and the induced current is amplified by the loudspeaker and then transmitted to the loudspeaker to emit amplified sound.

At present, the moving-coil microphone has poor shockproof effect, and after the microphone core of the moving-coil microphone collides, a diaphragm in the microphone core generates large shock, so that noise is generated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a miaow core and moving coil microphone, can reduce the noise that the collision produced.

The utility model provides a solution of its technical problem is:

a microphone core comprising: a housing including a sound generating portion and a sound chamber portion; the sound forming component comprises a magnet and an annular diaphragm, and is arranged in the sound forming part; the buffer assembly comprises a main shell, a main annular elastic ring and a main cylinder body, wherein the inner peripheral part of the main shell is connected with the outer peripheral part of the main cylinder body through the main annular elastic ring, a main movable cavity is arranged between the main shell and the main cylinder body, the main cylinder body is movably arranged in the main movable cavity, a sound chamber part is arranged in the main cylinder body, the outer wall of the sound chamber part is attached to the inner wall of the main cylinder body, and the main annular elastic ring is used for resetting the main cylinder body; the mounting, the mounting with sound chamber portion joint is fixed, the mounting is used for sealing sound chamber portion with fixed buffering subassembly.

As a further improvement of the above technical scheme, the buffer assembly further comprises a connecting sleeve, the main housing comprises a first housing and a second housing, the main annular elastic ring comprises a first annular elastic ring and a second annular elastic ring, the main cylinder comprises a first cylinder and a second cylinder, the first housing and the first cylinder are connected through the first annular elastic ring, the second housing and the second cylinder are connected through the second annular elastic ring, and the first housing, the connecting sleeve and the second housing are sequentially connected.

As a further improvement of the above aspect, the first cylinder and the second cylinder have the same length, and the sound chamber portion has a length greater than the sum of the lengths of the first cylinder and the second cylinder.

As a further improvement of the above technical solution, a limiting ring is disposed on an inner wall of the connecting sleeve, the limiting ring coincides with an axis of the main annular elastic ring, an inner diameter of the limiting ring is larger than an outer diameter of the main cylinder, the main cylinder is located in the limiting ring, and a length of the sound chamber portion is smaller than a sum of lengths of the first cylinder, the second cylinder and the limiting ring.

As a further improvement of the technical scheme, the shell is connected with a wheat cover, the wheat cover is fixedly connected with the sounding part in a clamping mode, and a plurality of through holes are formed in the top of the wheat cover.

As a further improvement of the technical scheme, the fixing piece is provided with a buckle, and the sound chamber part is provided with a clamping groove matched with the buckle.

As a further improvement of the above technical solution, a copper ring for grounding is provided outside the sound generating portion.

As a further improvement of the above technical solution, a guide groove is provided on the outer side of the sound chamber portion, and the fixing member is provided with a guide hole matching with the guide groove.

As a further improvement of the above technical solution, the sound generating assembly further comprises a control circuit board, the sound generating assembly further comprises a filter screen, the filter screen is arranged at one end of the sound generating assembly close to the sound chamber portion, the magnet is located in the through hole of the annular diaphragm, the annular diaphragm is provided with a voice coil, and the voice coil is electrically connected with the control circuit board.

A moving-coil microphone comprises a microphone shell, wherein the microphone core is arranged in the microphone shell.

The scheme at least has the following beneficial effects: the sound chamber part is sealed by the fixing part, and the sound quality of the microphone core can be ensured by the sound chamber part; the outer wall of sound chamber portion and the inner wall of main barrel laminate each other, and when miaow core collision back, main barrel shakes in main activity intracavity, and sound chamber portion also produces vibrations, under the effect of main annular elastic ring for main barrel resets, reduces the vibrations of sound chamber portion, thereby reduces the vibrations of cyclic annular diaphragm, can reduce the noise that the collision produced.

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 utility model is further explained with the attached drawings and the embodiments;

fig. 1 is a schematic structural view of a microphone core according to an embodiment of the present invention;

fig. 2 is an exploded view of a microphone core according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a microphone core according to an embodiment of the present invention;

fig. 4 is an exploded view of the sounding assembly according to the embodiment of the present invention;

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

FIG. 6 is an enlarged partial schematic view of FIG. 3;

fig. 7 is a system block diagram of a control circuit board according to an embodiment of the present invention;

reference numbers in the figures:

100-shell, 110-sound forming part, 111-copper ring, 120-sound chamber part, 121-clamping groove, 122-guide groove, 200-sound forming component, 210-magnet, 220-annular diaphragm, 221-voice coil, 230-filter screen, 300-buffer component, 310-main shell, 311-first shell, 312-second shell, 320-main annular elastic ring, 321-first annular elastic ring, 322-second annular elastic ring, 330-main cylinder, 331-first cylinder, 332-second cylinder, 340-main movable chamber, 350-connecting sleeve, 351-spacing ring, 400-fixing piece, 410-buckle, 420-guide hole, 500-microphone cover, 510-through hole and 600-control circuit board.

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, electric 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 4, an embodiment of the present invention provides a microphone core, including:

a housing 100 including a sound generating portion 110 and a sound chamber portion 120;

a sound-forming member 200 including a magnet 210 and an annular diaphragm 220, the sound-forming member 200 being disposed in the sound-forming portion 110;

the buffer assembly 300 comprises a main shell 310, a main annular elastic ring 320 and a main cylinder 330, wherein the inner peripheral part of the main shell 310 is connected with the outer peripheral part of the main cylinder 330 through the main annular elastic ring 320, a main movable cavity 340 is arranged between the main shell 310 and the main cylinder 330, the main cylinder 330 is movably arranged in the main movable cavity 340, the sound chamber part 120 is arranged in the main cylinder 330, the outer wall of the sound chamber part 120 is attached to the inner wall of the main cylinder 330, and the main annular elastic ring 320 is used for resetting the main cylinder 330;

the fixing member 400, the fixing member 400 is fixed to the sound chamber 120 in a snap-fit manner, and the fixing member 400 is used for sealing the sound chamber 120 and the fixed buffer assembly 300.

In this embodiment, after sound enters, the sound firstly passes through the annular diaphragm 220 and then enters the sound chamber portion 120, the annular diaphragm 220 is impacted by sound waves to generate vibration, and under the action of the magnet 210, the annular diaphragm 220 generates induced current which is transmitted to the speaker to emit amplified sound; the sound chamber part 120 is sealed by the fixing member 400, and the sound quality of the microphone core can be ensured by the sound chamber part 120; the outer wall of the sound chamber part 120 and the inner wall of the main cylinder 330 are attached to each other, and in an initial state, the axes of the main cylinder 330 and the main annular elastic ring 320 are overlapped; after the microphone core collides, the main cylinder 330 vibrates in the main movable cavity 340, and the sound chamber 120 also vibrates, so that the main cylinder 330 is reset under the action of the main annular elastic ring 320, and the vibration of the sound chamber 120 is reduced, thereby reducing the vibration of the annular diaphragm 220 and reducing the noise generated by the collision.

Referring to fig. 3 and 5, in some embodiments of the present invention, the buffering assembly 300 further includes a connecting sleeve 350, the main housing 310 includes a first housing 311 and a second housing 312, the main annular elastic ring 320 includes a first annular elastic ring 321 and a second annular elastic ring 322, the main cylinder 330 includes a first cylinder 331 and a second cylinder 332, the first housing 311 and the first cylinder 331 are connected by the first annular elastic ring 321, the second housing 312 and the second cylinder 332 are connected by the second annular elastic ring 322, and the first housing 311, the connecting sleeve 350 and the second housing 312 are sequentially connected.

In this embodiment, the first casing 311, the first annular elastic ring 321, and the first cylinder 331 serve as a first buffer, the second casing 312, the second annular elastic ring 322, and the second cylinder 332 serve as a second buffer, and the first annular elastic ring 321 and the second annular elastic ring 322 are not worn to the same extent.

Preferably, in some embodiments of the present invention, the first cylinder 331 and the second cylinder 332 have the same length, and the length of the sound chamber portion 120 is greater than the sum of the lengths of the first cylinder 331 and the second cylinder 332.

In this embodiment, the length relationship is defined, so that the first cylinder 331 and the second cylinder 332 are uniformly stressed, and the buffering effect is improved.

Referring to fig. 3 and 5, in some embodiments of the present invention, the inner wall of the connection sleeve 350 is provided with a limiting ring 351, the limiting ring 351 coincides with the axis of the main annular elastic ring 320, the inner diameter of the limiting ring 351 is greater than the outer diameter of the main cylinder 330, the main cylinder 330 is located in the limiting ring 351, and the length of the sound chamber portion 120 is less than the sum of the lengths of the first cylinder 331, the second cylinder 332 and the limiting ring 351.

In this embodiment, the stopper 351 can limit the displacement distance of the main cylinder 330, ensuring the shock-absorbing effect of the microphone.

Referring to fig. 1 and 2, in some embodiments of the present invention, the casing 100 is connected to a wheat cover 500, the wheat cover 500 is fixed to the sounding part 110, and a plurality of via holes 510 are formed on the top of the wheat cover 500.

In this embodiment, sound enters through the via 510, which can reduce the entrance of noise.

Referring to fig. 6, in some embodiments of the present invention, the fixing member 400 is provided with a buckle 410, and the sound chamber portion 120 is provided with a slot 121 matching with the buckle 410.

In this embodiment, the stability of the fixing member 400 and the chamber portion 120 is ensured.

Referring to fig. 2, in some embodiments of the present invention, a copper ring 111 for grounding is disposed outside the sound forming portion 110.

In this embodiment, the copper ring 111 can play an effective protection role.

Referring to fig. 2, in some embodiments of the present invention, a guide groove 122 is formed outside the sound chamber portion 120, and the fixing member 400 is provided with a guide hole 420 matching with the guide groove 122.

In this embodiment, the sound chamber portion 120 can be effectively fixed.

Referring to fig. 4 and 7, some embodiments of the present invention further include a control circuit board 600, the sound generating assembly 200 further includes a filter screen 230, the filter screen 230 is disposed at an end of the sound generating assembly 200 close to the sound chamber portion 120, the magnet 210 is disposed in the through hole of the annular diaphragm 220, the annular diaphragm 220 is disposed with a voice coil 221, and the voice coil 221 is electrically connected to the control circuit board 600.

In this embodiment, the filter screen 230 can prevent dust from entering the sound chamber portion 120; the magnet 210 provides a magnetic field, when the sound wave vibrates the annular diaphragm 220, the voice coil 221 vibrates along with the sound wave, the voice coil 221 vibrates in the magnetic field, so that induced current is generated, the magnitude and direction of the induced current change, the amplitude and frequency of the change are determined by the sound wave, the induced current is transmitted to the control circuit board 600, and the control circuit board 600 sends out sound after transmitting a signal to the loudspeaker.

Another embodiment of the present invention provides a moving-coil microphone, which comprises a microphone housing, wherein the microphone housing is provided with a microphone core as above.

In this embodiment, since the microphone case is provided with the microphone core according to any of the above embodiments, the moving-coil microphone according to this embodiment has the advantages of the microphone core according to any of the above embodiments.

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 gist of the present invention within the knowledge range of those skilled in the art.

Claims

1. A microphone core, comprising:

a housing including a sound generating portion and a sound chamber portion;

the sound forming component comprises a magnet and an annular diaphragm, and is arranged in the sound forming part;

the buffer assembly comprises a main shell, a main annular elastic ring and a main cylinder body, wherein the inner peripheral part of the main shell is connected with the outer peripheral part of the main cylinder body through the main annular elastic ring, a main movable cavity is arranged between the main shell and the main cylinder body, the main cylinder body is movably arranged in the main movable cavity, a sound chamber part is arranged in the main cylinder body, the outer wall of the sound chamber part is attached to the inner wall of the main cylinder body, and the main annular elastic ring is used for resetting the main cylinder body;

the mounting, the mounting with sound chamber portion joint is fixed, the mounting is used for sealing sound chamber portion with fixed buffering subassembly.

2. The microphone core according to claim 1, wherein the buffer assembly further comprises a connecting sleeve, the main housing comprises a first housing and a second housing, the main annular elastic ring comprises a first annular elastic ring and a second annular elastic ring, the main cylinder comprises a first cylinder and a second cylinder, the first housing and the first cylinder are connected through the first annular elastic ring, the second housing and the second cylinder are connected through the second annular elastic ring, and the first housing, the connecting sleeve and the second housing are sequentially connected.

3. The microphone core according to claim 2, wherein the first cylinder and the second cylinder have the same length, and the sound chamber portion has a length larger than the sum of the lengths of the first cylinder and the second cylinder.

4. The microphone core as claimed in claim 3, wherein the inner wall of the connecting sleeve is provided with a stopper ring, the stopper ring coincides with the axis of the main annular elastic ring, the inner diameter of the stopper ring is larger than the outer diameter of the main cylinder, the main cylinder is located in the stopper ring, and the length of the sound chamber part is smaller than the sum of the lengths of the first cylinder, the second cylinder and the stopper ring.

5. The microphone core as claimed in claim 4, wherein the casing is connected with a microphone cover, the microphone cover is fixed to the sound forming part in a clamping manner, and a plurality of through holes are formed in the top of the microphone cover.

6. The microphone core as claimed in claim 2, wherein the fixing member is provided with a snap, and the chamber portion is provided with a catch groove to be fitted with the snap.

7. The microphone core as claimed in claim 2, wherein the sounding part is provided at an outer side thereof with a copper ring for grounding.

8. The microphone core as claimed in claim 2, wherein a guide groove is formed outside the sound chamber portion, and the fixing member is provided with a guide hole matching the guide groove.

9. The microphone core according to claim 2, further comprising a control circuit board, wherein the sound generating unit further comprises a filter disposed at an end of the sound generating unit adjacent to the sound chamber portion, wherein the magnet is disposed in the through hole of the annular diaphragm, and wherein the annular diaphragm is provided with a voice coil electrically connected to the control circuit board.

10. A moving-coil microphone comprising a microphone case, wherein the microphone case is provided with a microphone core according to any one of claims 1 to 9.