CN209806083U

CN209806083U - Noise-proof microphone

Info

Publication number: CN209806083U
Application number: CN201921045755.8U
Authority: CN
Inventors: 李波
Original assignee: Jiangyong Yusheng Electronic Technology Co Ltd
Current assignee: Hunan Yusheng Technology Co ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2019-12-17
Anticipated expiration: 2029-07-05

Abstract

The utility model discloses an anti-noise microphone, which comprises a microphone shell, wherein the microphone shell is internally provided with an annular cavity and an installation cavity from outside to inside, and the inner wall of the annular cavity is provided with a damping and noise-reducing layer; a PCB is arranged in the mounting cavity, and a chip is arranged on the PCB; a plurality of noise reduction assemblies are arranged in the annular cavity; the mounting cavity is communicated with the annular cavity through a plurality of connecting holes; the noise reduction assemblies are fixed on the supporting columns on the inner wall of the mounting cavity; the supporting column is sleeved with an elastic supporting piece, and the elastic supporting piece and one end of the supporting column are inserted into the mounting cavity through the connecting hole; one end of the elastic supporting piece, which is positioned in the mounting cavity, is connected with a sound insulation board, and the sound insulation board is in contact with the PCB; the surface of the support column is provided with an external thread, and the support column is provided with a nut. The utility model has simple structure, strong structural stability and good anti-seismic effect, and the chip in the microphone is more stable and not easy to loose after being installed; has good noise reduction effect.

Description

Noise-proof microphone

Technical Field

The utility model relates to a miaow head field, concretely relates to noise control's miaow head.

Background

The microphone is an energy conversion device that converts an audio signal into an electrical signal, and is a device (electrical → acoustic) that is directly opposite to the speaker. The microphone is an input and the loudspeaker is an output. Microphone core, microphone.

The existing microphone has poor noise reduction effect and is not beneficial to use.

Disclosure of Invention

The utility model aims to solve the technical problem that a noise control sound's miaow head that can solve above-mentioned problem, stable in structure, antidetonation are effectual.

The utility model discloses a realize through following technical scheme: an anti-noise microphone comprises a microphone shell, an annular cavity and a mounting cavity are arranged in the microphone shell from outside to inside, and a damping and noise-reducing layer is arranged on the inner wall of the annular cavity; a PCB is arranged in the mounting cavity, and a chip is arranged on the PCB; a plurality of noise reduction assemblies are arranged in the annular cavity; the mounting cavity is communicated with the annular cavity through a plurality of connecting holes; the noise reduction assemblies are fixed on the supporting columns on the inner wall of the mounting cavity; the supporting column is sleeved with an elastic supporting piece, and the elastic supporting piece and one end of the supporting column are inserted into the mounting cavity through the connecting hole; one end of the elastic supporting piece, which is positioned in the mounting cavity, is connected with a sound insulation board, and the sound insulation board is in contact with the PCB; the surface of the support column is provided with an external thread, and the support column is provided with a nut.

The model of the chip is RF5123KC as a preferable technical scheme.

As a preferred technical scheme, the number of the connecting holes is three, and an included angle between two adjacent connecting holes is 120 degrees.

As the preferred technical scheme, a sound absorption cavity is arranged in the sound insulation board, and sound absorption materials are stored in the sound absorption cavity; the sound insulation board is provided with a plurality of sound absorption holes communicated with the sound absorption cavity.

As the preferred technical scheme, the nut is provided with a central hole, the inner wall in the central hole is provided with internal threads, and the internal threads are matched with the external threads; the nut is engaged with the support column through threads.

As preferred technical scheme, elastic support spare includes a spring, and the both ends of spring all weld a connecting plate, and a connecting plate is connected with the acoustic celotex board.

As a preferred technical scheme, the damping and noise reduction layer comprises a noise reduction nano foam layer and a rubber layer, and the rubber layer is bonded and fixed on the inner wall of the annular cavity; the rubber layer and the noise reduction nano foam layer are fixedly bonded.

The utility model has the advantages that: the utility model has simple structure, strong structural stability and good anti-seismic effect, and the chip in the microphone is more stable and not easy to loose after being installed; has good noise reduction effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a block diagram of the present invention;

Figure 2 is the structure diagram of the shock absorption and noise reduction layer of the utility model.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "the outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The use of terms herein such as "upper," "above," "lower," "below," and the like in describing relative spatial positions is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the present invention, unless otherwise explicitly specified or limited, the terms "set", "coupled", "connected", "penetrating", "plugging", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1, the microphone comprises a microphone shell 1, an annular cavity 2 and a mounting cavity 3 are arranged in the microphone shell from outside to inside, and a damping and noise-reducing layer 5 is arranged on the inner wall of the annular cavity 1; a PCB (printed circuit board) 7 is arranged in the mounting cavity, and a chip 6 is arranged on the PCB; a plurality of noise reduction assemblies are arranged in the annular cavity.

In the embodiment, the installation cavity 3 is communicated with the annular cavity 2 through a plurality of connecting holes 7; the noise reduction components are all fixed on support columns 8 on the inner wall of the mounting cavity 3; an elastic supporting piece is sleeved on the supporting column, and one ends of the elastic supporting piece and the supporting column 8 penetrate through the connecting hole 7 and are inserted into the mounting cavity 3; one end of the elastic supporting piece, which is positioned in the installation cavity 3, is connected with a sound insulation board 9, and the sound insulation board 9 is in contact with the PCB 7; the surface of the support column 8 is provided with an external thread, and the support column is provided with a nut 11.

The model of the chip 6 is RF5123 KC.

Wherein, the quantity of connecting hole is three, and the contained angle between two adjacent connecting holes is 120 degrees for elastic support spare and acoustic celotex board are also three, and acoustic celotex board and PCB board are contradicted mutually, are three point location structure, and the structure is more stable.

A sound absorption cavity is arranged in the sound insulation board 9, sound absorption materials 12 are stored in the sound absorption cavity, and the sound absorption materials are sound absorption cotton, so that the noise reduction effect of the whole structure is improved; the baffle is provided with a plurality of sound-absorbing holes (not shown) communicating with the sound-absorbing chamber.

Wherein, the nut 11 is provided with a central hole, the inner wall in the central hole is provided with an internal thread, and the internal thread is matched with the external thread; through thread engagement between nut and the support column, the screw thread can rotate, and elastic support member is locked through the nut, so that the PCB is strong in structural stability after being installed.

Wherein, elastic support includes a spring 131, and a connecting plate 132 is all welded at the both ends of spring, and a connecting plate is connected with the acoustic celotex board.

The damping and noise-reducing layer comprises a noise-reducing nano foam layer 501 and a rubber layer 502 and is used for improving the noise-reducing and damping effects of the whole structure, and the rubber layer is fixedly bonded on the inner wall of the annular cavity; the rubber layer and the noise reduction nano foam layer are fixedly bonded.

The working principle is as follows: when the device is used, the support columns on the device are fixed on the rubber layer through waterproof glue. The noise reduction nano foam layer 501 and the sound absorption material 12 on the device improve the noise reduction effect of the whole device.

The rubber layer and the elastic support piece increase the anti-seismic stability of the whole device.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a noise control's miaow head which characterized in that: the microphone comprises a microphone shell, wherein an annular cavity and an installation cavity are arranged in the microphone shell from outside to inside, and a damping and noise-reducing layer is arranged on the inner wall of the annular cavity; a PCB is arranged in the mounting cavity, and a chip is arranged on the PCB; a plurality of noise reduction assemblies are arranged in the annular cavity; the mounting cavity is communicated with the annular cavity through a plurality of connecting holes; the noise reduction assemblies are fixed on the supporting columns on the inner wall of the mounting cavity; the supporting column is sleeved with an elastic supporting piece, and the elastic supporting piece and one end of the supporting column are inserted into the mounting cavity through the connecting hole; one end of the elastic supporting piece, which is positioned in the mounting cavity, is connected with a sound insulation board, and the sound insulation board is in contact with the PCB; the surface of the support column is provided with an external thread, and the support column is provided with a nut.

2. The anti-noise microphone according to claim 1, wherein: the model of the chip is RF5123 KC.

3. The anti-noise microphone according to claim 1, wherein: the number of the connecting holes is three, and the included angle between every two adjacent connecting holes is 120 degrees.

4. The anti-noise microphone according to claim 1, wherein: a sound absorption cavity is arranged in the sound insulation board, and sound absorption materials are stored in the sound absorption cavity; the sound insulation board is provided with a plurality of sound absorption holes communicated with the sound absorption cavity.

5. The anti-noise microphone according to claim 1, wherein: the nut is provided with a central hole, the inner wall in the central hole is provided with an internal thread, and the internal thread is matched with the external thread; the nut is engaged with the support column through threads.

6. The anti-noise microphone according to claim 1, wherein: elastic support piece includes a spring, and a connecting plate is all welded at the both ends of spring, and a connecting plate is connected with the acoustic celotex board.

7. The anti-noise microphone according to claim 1, wherein: the damping and noise-reducing layer comprises a noise-reducing nano foam layer and a rubber layer, and the rubber layer is fixedly bonded on the inner wall of the annular cavity; the rubber layer and the noise reduction nano foam layer are fixedly bonded.