CN212909929U

CN212909929U - Microphone capable of adjusting directivity

Info

Publication number: CN212909929U
Application number: CN202021003448.6U
Authority: CN
Inventors: 王俊
Original assignee: Shenzhen Luyuesheng Technology Co ltd
Current assignee: Shenzhen Luyuesheng Technology Co ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-04-06
Anticipated expiration: 2030-06-04

Abstract

The utility model relates to a microphone of adjustable directive property, foretell microphone of adjustable directive property includes first sound chamber, the second sound chamber, the annular assembly in first sound chamber of parcel and second sound chamber, set up in the circuit module of first sound chamber upper end, set up in the first polar plate of second sound chamber lower extreme, set up in vibrating diaphragm and the shell of first polar plate lower extreme, first sound chamber overlaps the setting along the vertical direction with the second sound chamber, adjust the volume in first sound chamber and second sound chamber and can adjust the directive property of microphone, the function of some directive property regulation that has the unable realization of simple adjustment damping material, the directive property regulatory function that realizes is more perfect, the acoustic effect who obtains has been promoted by a wide margin. The problem of directivity adjustment imperfection that microphone in the traditional technique method exists is solved.

Description

Microphone capable of adjusting directivity

Technical Field

The utility model relates to a technical field of microphone especially relates to a microphone of adjustable directive property.

Background

In real life, a microphone is often used as a component for collecting sound signals, the directivity of the microphone in the conventional technical method is related to the air permeability of an internal damping material of the microphone, the conventional microphone usually adopts the air permeability for replacing the internal damping material to realize the adjustment of the directivity, however, the function of adjusting the directivity cannot be realized by simply adjusting the damping material, so that the function of adjusting the directivity is not complete, and the obtained acoustic effect is poor. Thus, the microphone in the prior art method has a problem that the directivity adjustment is not sufficient.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a microphone capable of adjusting directivity, and aims to solve the problem that the directivity of the microphone in the prior art is not completely adjusted.

The utility model discloses a realize through following technical scheme:

an adjustable directivity microphone, wherein the adjustable directivity microphone comprises: the device comprises a first sound cavity, a second sound cavity, an annular assembly wrapping the first sound cavity and the second sound cavity, a circuit assembly arranged at the upper end of the first sound cavity, a first polar plate arranged at the lower end of the second sound cavity, and a vibrating diaphragm arranged at the lower end of the first polar plate;

the vibrating diaphragm, the first polar plate, the annular assembly, the circuit assembly, the first sound cavity and the second sound cavity are all arranged in a shell, and a shell through hole is formed in the lower side of the shell;

the first sound cavity and the second sound cavity are overlapped in the vertical direction, and the directivity of the microphone can be adjusted by adjusting the volumes of the first sound cavity and the second sound cavity.

The microphone with adjustable directivity is characterized in that a first copper ring is arranged in the annular assembly, a second polar plate is arranged at the upper end of the first copper ring, and a space formed by the first polar plate, the second polar plate and the first copper ring in a surrounding mode is arranged in the first sound cavity.

The microphone of adjustable directive property, wherein, still be equipped with the second copper ring in the annular assembly the cross sectional dimension of second copper ring with the cross sectional dimension of first copper ring equals, circuit assembly set up in second copper ring upper end, the second sound cavity does the second polar plate the second copper ring reaches the space that the circuit assembly encloses to close and forms.

The microphone with adjustable directivity is characterized in that a damping component is further arranged at the upper end of the second pole plate.

The microphone with adjustable directivity is characterized in that the damping component is made of a material with air permeability.

The microphone with adjustable directivity is characterized in that a first polar plate through hole is formed in the first polar plate.

The microphone with adjustable directivity is characterized in that a second pole plate through hole is formed in the second pole plate.

The microphone with adjustable directivity is characterized in that a gasket is arranged in a gap between the diaphragm and the annular assembly as well as between the diaphragm and the first polar plate.

The microphone with adjustable directivity is characterized in that a dustproof net covering the through hole is arranged on the outer side of the shell.

Advantageous effects

Compared with the prior art, the utility model has the following outstanding advantage and effect: the utility model discloses a microphone of adjustable directive property includes first sound chamber, the second sound chamber, wrap up the annular assembly in first sound chamber and second sound chamber, set up in the circuit subassembly of first sound chamber upper end, set up in the first polar plate of second sound chamber lower extreme, set up in vibrating diaphragm and the shell of first polar plate lower extreme, first sound chamber overlaps the setting with the second sound chamber along the vertical direction, adjust the volume in first sound chamber and second sound chamber and can adjust the directive property of microphone, certain directive property regulation's that has the unable realization of simple adjustment damping material function, the directive property regulatory function who realizes is more perfect, the acoustic effect who obtains has been promoted by a wide margin. The problem of directivity adjustment imperfection that microphone in the traditional technique method exists is solved.

Drawings

Fig. 1 is a cross-sectional structure view of the microphone with adjustable directivity of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc. refer to directions of the attached drawings only. Accordingly, the directional terms used are used for describing and understanding the present invention, and are not used for limiting the present invention.

The utility model provides a microphone of adjustable directive property, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, following right the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, fig. 1 is a cross-sectional structural view of a microphone with adjustable directivity according to the present invention. As shown, an adjustable directivity microphone, wherein the adjustable directivity microphone comprises: the acoustic resonator comprises a first acoustic cavity 10, a second acoustic cavity 20, an annular assembly 1 wrapping the first acoustic cavity 10 and the second acoustic cavity 20, a circuit assembly 2 arranged at the upper end of the first acoustic cavity 10, a first polar plate 3 arranged at the lower end of the second acoustic cavity 20, and a vibrating diaphragm 4 arranged at the lower end of the first polar plate 3; the vibrating diaphragm 4, the first polar plate 3, the annular component 1, the circuit component 2, the first acoustic cavity 10 and the second acoustic cavity 20 are all arranged inside a shell 5, and a shell through hole 51 is formed in the lower side of the shell 5; the first acoustic cavity 10 and the second acoustic cavity 20 are overlapped in the vertical direction, and the directivity of the microphone can be adjusted by adjusting the volumes of the first acoustic cavity 10 and the second acoustic cavity 20. The annular assembly 1 may be made of a plastic material.

Circuit component 2 is for including first paster layer, middle shielding layer and the paster layer of second, and first paster layer, middle shielding layer and the paster layer of second can make up and become a PCB board, and then first paster layer and the paster layer of second are the insulating layer on the PCB board, and the insulating layer forms the dielectric layer promptly for adopting the insulating material preparation, is equipped with microcircuit structure on the paster layer of second, and microcircuit structure is including setting up Field Effect Transistor 21 (FET), electric capacity 22 and resistance 23 of terminal surface under the paster layer of second. Through setting up middle shielding layer and the load circuit's in the microphone earth connection electricity and be connected, form an independent shield cover, can realize carrying out shielded shielding effect to microcircuit structure to improve the interference killing feature of microphone.

In a more specific embodiment, a first copper ring 11 is disposed in the annular assembly 1, a second polar plate 12 is disposed at an upper end of the first copper ring 11, and the first acoustic cavity 10 is a space enclosed by the first polar plate 3, the second polar plate 12, and the first copper ring 11.

In a more specific embodiment, a second copper ring 13 is further disposed in the annular component 1, a cross-sectional dimension of the second copper ring 13 is equal to a cross-sectional dimension of the first copper ring 11, the circuit component 2 is disposed at an upper end of the second copper ring 13, and the second sound cavity 20 is a space enclosed by the second electrode plate 12, the second copper ring 13, and the circuit component 2. Specifically, since the cross-sectional dimension of the first copper ring is equal to the cross-sectional dimension of the second copper ring, the volume of the first acoustic cavity 10 and the volume of the second acoustic cavity 20 can be adjusted by adjusting the heights of the first copper ring 11 and the second copper ring 13.

In a more specific embodiment, the second pole plate 12 is further provided with a damping assembly 121 at the upper end thereof. Wherein, the damping component 121 is made of a material with air permeability; the first polar plate 3 is provided with a first polar plate through hole 31; the second plate 12 is provided with a second plate through hole 122.

In a more specific embodiment, a spacer 41 is disposed in a gap between the diaphragm 4 and the ring assembly 1 and the first pole plate 3, the spacer 41 can buffer vibration generated by the diaphragm 4, wherein a dust screen 52 covering the through hole 51 is disposed outside the housing 5, and the dust screen 52 can prevent dust from entering the inside of the microphone and affecting components in the microphone.

The utility model discloses a microphone of adjustable directive property, foretell microphone of adjustable directive property includes first sound chamber, the second sound chamber, the annular assembly in first sound chamber of parcel and second sound chamber, set up in the circuit subassembly of first sound chamber upper end, set up in the first polar plate of second sound chamber lower extreme, set up in vibrating diaphragm and the shell of first polar plate lower extreme, first sound chamber overlaps the setting along the vertical direction with the second sound chamber, adjust the volume in first sound chamber and second sound chamber and can adjust the directive property of microphone, certain directive property that has the unable realization of simple adjustment damping material is adjusted's function, the directive property regulatory function that realizes is more perfect, the acoustic effect who obtains has promoted by a wide margin. The problem of directivity adjustment imperfection that microphone in the traditional technique method exists is solved.

It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims

1. An adjustable directivity microphone, comprising: the device comprises a first sound cavity, a second sound cavity, an annular assembly wrapping the first sound cavity and the second sound cavity, a circuit assembly arranged at the upper end of the first sound cavity, a first polar plate arranged at the lower end of the second sound cavity, and a vibrating diaphragm arranged at the lower end of the first polar plate;

2. The microphone of claim 1, wherein a first copper ring is disposed in the annular assembly, a second polar plate is disposed at an upper end of the first copper ring, and the first acoustic cavity is a space enclosed by the first polar plate, the second polar plate, and the first copper ring.

3. The microphone of claim 2, wherein a second copper ring is further disposed in the annular assembly, a cross-sectional dimension of the second copper ring is equal to a cross-sectional dimension of the first copper ring, the circuit assembly is disposed at an upper end of the second copper ring, and the second sound cavity is a space enclosed by the second polar plate, the second copper ring, and the circuit assembly.

4. An adjustable directivity microphone as claimed in claim 2 or 3, wherein a damping member is further provided at an upper end of the second pole plate.

5. An adjustable directivity microphone as claimed in claim 4, wherein said damping member is made of a material having air permeability.

6. The microphone of claim 4, wherein the first plate has a first plate through hole.

7. An adjustable directivity microphone as claimed in claim 4, wherein said second pole plate is provided with a second pole plate through hole.

8. An adjustable directivity microphone as claimed in any one of claims 1 to 3, wherein a spacer is provided in a gap between said diaphragm and said ring assembly and said first pole plate.

9. An adjustable directivity microphone according to any one of claims 1 to 3, wherein a dust-proof net covering the through hole is provided outside the housing.