CN216673289U

CN216673289U - Special microphone

Info

Publication number: CN216673289U
Application number: CN202123123789.4U
Authority: CN
Inventors: 董卫童
Original assignee: Gaoyou Huasheng Electronics Co ltd
Current assignee: Gaoyou Huasheng Electronics Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-06-03
Anticipated expiration: 2031-12-08

Abstract

The utility model relates to a special microphone in the field of electroacoustic, which comprises a front cover, a rear cover and a vibrating diaphragm, wherein the front cover is provided with a front cover; the vibrating diaphragm is clamped between the front cover and the rear cover; the middle parts of the front cover and the rear cover form an arch part, and a downward convex part is arranged on the periphery of the rear cover; a downward groove part is arranged on the periphery of the front cover, and a rolled fixing part is arranged on the periphery of the front cover; the periphery of the rear cover is embedded into the fixing part of the front cover. The utility model has novel structure, and the device is equipped in the gas mask, has the characteristics of water resistance, smoke resistance, high temperature resistance and the like, and can still clearly transmit sound waves in severe environment.

Description

Special microphone

Technical Field

The utility model relates to the field of electroacoustic, in particular to a special microphone.

Background

At present, a microphone, especially a miniature microphone, is generally composed of a front cover, a diaphragm, a voice coil, a casing, a magnetic circuit system and other components.

When the external environment is very severe, such as a fire scene, the ambient temperature is very high and can reach more than 100 ℃, and most of sound production equipment can be damaged and cannot work at the moment. If the surrounding environment is full of fatal dust, viruses and the like, sound production equipment is required to have good sealing performance and isolate surrounding air, so that a microphone with good sealing performance, high temperature resistance and good reliability needs to be manufactured.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a special microphone with good sealing performance.

The purpose of the utility model is realized as follows: a special microphone comprises a front cover, a rear cover and a vibrating diaphragm; the vibrating diaphragm is clamped between the front cover and the rear cover; the middle parts of the front cover and the rear cover form an arch part, and a downward convex part is arranged on the periphery of the rear cover; a downward groove part is arranged on the periphery of the front cover, and a rolled fixing part is arranged on the periphery of the front cover; the periphery of the rear cover is embedded into the fixing part of the front cover.

Preferably, when the diaphragm is pressed by the front cover and the rear cover, the diaphragm located in the arch portion is pulled to be horizontal without wrinkles.

Preferably, an inflection point which is jacked upwards is arranged on the inner side of the groove part, and when the inflection point is abutted to the rear cover, the lowest point of the protruding part is not contacted with the inner side of the groove part.

Preferably, a plurality of groups of sound transmission holes are uniformly distributed on the front cover and the rear cover, the sound transmission holes on the front cover and the rear cover correspond up and down, and the centers of the sound transmission holes and the sound transmission holes are on the same axis.

Preferably, the sound transmission holes are distributed radially in a circular shape in the sequence of 8, 16 and 24.

Compared with the prior art, the utility model has the advantages that: the periphery of the rear cover is fixed by the fixing part which is arranged between the front cover and the rear cover and is rolled up by the periphery of the front cover, so that the sealing performance of the whole device is improved; simultaneously, the inflection points on two sides of the groove part carry out secondary pulling and fixing on the vibrating diaphragm, so that the vibrating diaphragm can be tensioned doubly, and not only the sealing performance between the vibrating diaphragm and the vibrating diaphragm, which are not easy to wrinkle, can be improved.

Drawings

Fig. 1 is a schematic top view of the present invention.

FIG. 2 is a schematic side sectional view of the present invention.

Wherein, 1 protecgulum, 2 back lids, 3 vibrating diaphragms, 4 hunch-up portions, 5 bulge portions, 6 recess portions, 7 fixed parts, 8 sound transmission holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1, a special microphone includes a front cover 1, a rear cover 2, and a diaphragm 3; the vibrating diaphragm 3 is clamped between the front cover 1 and the rear cover 2, and the vibrating diaphragm 3 is fixed by the front cover 1 and the rear cover to prevent displacement; an arched part 4 is formed in the middle of the front cover 1 and the rear cover 2, a downward convex part 5 is arranged on the periphery of the rear cover 2, an accommodating cavity is formed between the arched part 4 and the convex part 5, and sound can be transmitted in the accommodating cavity; a downward groove part 6 is arranged on the periphery of the front cover 1, and a rolled fixing part 7 is arranged on the periphery of the front cover 1; the rear cover 2 is fitted into the fixing portion 7 of the front cover 1 at the outer periphery thereof, and the rear cover 2 is fitted into the front cover 1 to enhance the stability of the entire device.

When above-mentioned vibrating diaphragm 3 was compressed tightly by protecgulum 1 and hou gai 2, the vibrating diaphragm 3 that is located the hunch-up portion was dragged to the level and does not have the fold, evens out the vibrating diaphragm is whole, and stable sound wave passes through the back, and vibrating diaphragm vibration frequency is unanimous, and pronunciation are more stable.

The inner side of the groove part 6 is provided with an inflection point which is jacked upwards, when the inflection point is abutted to the rear cover 2, the lowest point of the bulge part 5 is not contacted with the inner side of the groove part 6, and the inflection point is slightly higher than the inflection point of the outer side of the groove part, so that the inflection point can be abutted to the inner wall of the rear cover which is arched upwards.

The sound transmission holes 8 are uniformly distributed on the front cover 1 and the rear cover 2, the sound transmission holes on the front cover 1 and the rear cover 2 correspond up and down, the centers of the sound transmission holes and the rear cover are on the same axis, the up-down correspondence of the sound transmission holes on the front cover and the rear cover is favorable for sound wave transmission, and the effect of improving the sound quality is achieved.

The sound transmission holes 8 are distributed in a circular shape in a radial mode through 8, 16 and 24 in sequence, and sound waves are transmitted conveniently due to uniform distribution.

The working principle of the utility model is explained as follows: the microphone is arranged in the gas mask, so that a person can carry out sound transmission operation, the periphery of the rear cover is fixed through the fixing part between the front cover and the rear cover and the periphery of the front cover is rolled up, and the sealing performance of the whole device is enhanced; carry out the secondary through the flex point of concave part both sides and pull the vibrating diaphragm and fix for the vibrating diaphragm can dual take-up, and the transaudient effect is better.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.

Claims

1. A special microphone, characterized by: comprises a front cover, a back cover and a vibrating diaphragm; the vibrating diaphragm is clamped between the front cover and the rear cover; the middle parts of the front cover and the rear cover form an arch part, and a downward convex part is arranged on the periphery of the rear cover; a downward groove part is arranged on the periphery of the front cover, and a rolled fixing part is arranged on the periphery of the front cover; the periphery of the rear cover is embedded into the fixing part of the front cover.

2. A special microphone according to claim 1, characterized in that: when the vibrating diaphragm is pressed by the front cover and the rear cover, the vibrating diaphragm in the arch part is pulled to be horizontal without wrinkles.

3. A special microphone according to claim 1, characterized in that: and the inner side of the groove part is provided with an inflection point which is jacked upwards, and when the inflection point is abutted against the rear cover, the lowest point of the bulge part is not contacted with the inner side of the groove part.

4. A special microphone according to claim 1, characterized in that: the sound transmission holes in the front cover and the back cover correspond up and down and are centered on the same axis.

5. A special microphone according to claim 4, characterized in that: the sound transmission holes are distributed radially in a circular shape by 8, 16 and 24 in sequence.

6. A special microphone according to any of claims 1-5, characterized in that: the microphone is mounted into the respirator.