CN219295311U

CN219295311U - Vehicle microphone system

Info

Publication number: CN219295311U
Application number: CN202320768895.8U
Authority: CN
Inventors: 张金宇
Original assignee: AAC Acoustic Technologies Shenzhen Co Ltd
Current assignee: AAC Technologies Holdings Shenzhen Co Ltd
Priority date: 2023-04-04
Filing date: 2023-04-04
Publication date: 2023-07-04
Anticipated expiration: 2033-04-04

Abstract

The utility model provides a vehicle-mounted microphone system, which comprises a microphone module and a vehicle body for mounting the microphone module, wherein the vehicle body comprises an outer surface facing the outside of the vehicle and an inner surface opposite to the outer surface, the microphone module is mounted on the inner surface, the vehicle body is provided with an acoustic inlet channel of the microphone module, the acoustic inlet channel comprises an arch channel and an acoustic hole communicated with the arch channel, a first end opening and a second end opening of the arch channel are formed on the outer surface and are mutually arranged at intervals, the acoustic hole is communicated with the arch channel at the top of the arch channel and forms an acoustic hole opening positioned on the inner surface, and the microphone module enters sound through the acoustic hole opening. The vehicle-mounted microphone system optimizes water resistance and reduces wind noise influence.

Description

Vehicle microphone system

[ field of technology ]

The utility model relates to the field of vehicle-mounted equipment, in particular to a vehicle-mounted microphone system.

[ background Art ]

In recent years, automobiles are gradually developed in an intelligent direction, and in-vehicle microphone systems as important components of intelligent interaction of automobiles are required to respectively arrange microphone modules facing the inside and the outside of the automobile. Wherein, towards the outside microphone module of car and install in the internal surface of automobile body, the automobile body is equipped with the sound inlet of microphone module, pastes on the internal surface of automobile body and is equipped with the waterproof membrane that covers the sound inlet.

However, microphone modules facing the outside of the vehicle face two major challenges, waterproof and wind noise. Regarding waterproofing, on the one hand, when an automobile is washed, the water flow impact of the high-pressure water gun makes the waterproof membrane difficult to effectively isolate water drops, so that the water inlet of the microphone module is invalid; on the other hand, after car washing, water drops can remain in the sound inlet hole, so that the microphone module cannot normally enter sound. Regarding wind noise, when the automobile is running, air flows at a high speed along the outer surface of the automobile body to form turbulence, wind noise can be generated at a place very close to the sound inlet hole, and the normal operation of the microphone module is seriously affected.

Therefore, it is necessary to provide a new car microphone system to solve the above-mentioned technical problems.

[ utility model ]

The utility model aims to overcome the technical problems and provide a vehicle-mounted microphone system which is optimized in waterproof and reduced in wind noise influence.

In order to achieve the above object, the present utility model provides a vehicle-mounted microphone system, which includes a microphone module and a vehicle body to which the microphone module is mounted, the vehicle body includes an outer surface facing the outside of the vehicle and an inner surface disposed opposite to the outer surface, the microphone module is mounted on the inner surface, the vehicle body is provided with an acoustic inlet channel of the microphone module, the acoustic inlet channel includes an arch channel and an acoustic hole communicating with the arch channel, a first end opening and a second end opening of the arch channel are formed on the outer surface and are disposed at intervals, the acoustic hole communicates with the arch channel at the top of the arch channel and forms an acoustic hole opening located on the inner surface, and the microphone module enters sound through the acoustic hole opening.

Preferably, a waterproof film covering the opening of the sound hole is attached to the inner surface, and annular sealing foam is clamped between the waterproof film and the microphone module and surrounds the opening of the sound hole.

Preferably, the arcuate channel includes a top wall and a bottom wall opposite the top wall, the bottom wall including a first arcuate wall, the top wall including a second arcuate wall disposed in correspondence with the first arcuate wall, and a first opposing arcuate wall extending in a direction opposite from one end of the second arcuate wall and a second opposing arcuate wall extending in a direction opposite from the other end of the second arcuate wall, the first opposing arcuate wall and the first arcuate wall forming the first end opening therebetween at the outer surface, and the second opposing arcuate wall and the first arcuate wall forming the second end opening therebetween at the outer surface.

Preferably, the distance from the top end of the first circular arc wall to the outer surface is 1 mm-2 mm.

Preferably, the acoustic port is a cylindrical port, and the first end opening and the second end opening are spaced apart by a distance at least twice the diameter of the acoustic port.

Preferably, the sound inlet channel has an axisymmetric structure.

In the vehicle-mounted microphone system, the first end opening and the second end opening which are formed on the outer surface of the arched channel are mutually spaced, so that water flow of the high-pressure water gun generally does not enter from the first end opening and the second end opening at the same time when a car washes, but is discharged from the other opening when water enters from one opening, and the direct impact of the water flow on the waterproof film can be reduced; after washing, along with the running of the automobile, air can pass through the sound inlet channel to take away residual water drops in the sound inlet channel, so that the normal sound inlet of the microphone module is ensured, and the waterproof performance is optimized. When the automobile runs, wind noise generated by turbulent flow formed by air flowing along the outer surface of the automobile body at high speed can be pushed away to a region far away from the sound inlet channel by air flow passing through the sound inlet channel, so that the influence of wind noise on the microphone module is reduced.

[ description of the drawings ]

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it will be obvious that the drawings in the description below are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person having ordinary skill in the art of the present utility model, wherein:

fig. 1 is a schematic perspective view of a vehicle microphone system according to the present utility model;

FIG. 2 is an exploded perspective view of the vehicle microphone system of FIG. 1;

fig. 3 is a cross-sectional view taken along line A-A of fig. 1.

[ detailed description ] of the utility model

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on embodiments of the present utility model, are within the scope of the present utility model.

Referring to fig. 1-3, the present utility model provides a vehicle-mounted microphone system 10, wherein the vehicle-mounted microphone system 10 includes a microphone module 11 and a vehicle body 12 to which the microphone module 11 is mounted.

The automobile body 12 includes the surface 121 towards the automobile exterior and with the surface 122 that the surface 121 set up relatively, the microphone module 11 install in the surface 122, the automobile body 12 is equipped with the sound passageway 13 of microphone module 11, the sound passageway 13 include arch passageway 131 and with the sound hole 132 of arch passageway 131 intercommunication, arch passageway 131's first end opening 1311 and second end opening 1312 form in surface 121 and mutual interval set up, sound hole 132 in arch passageway 131's top department with arch passageway 131 intercommunication and formation are located the sound hole opening 1321 of surface 122, microphone module 11 is through sound hole opening 1321 advances sound. Preferably, the sound inlet channel 13 has an axisymmetric structure.

The waterproof membrane 16 covering the sound hole opening 1321 is attached to the inner surface 122, and the annular sealing foam 17 is sandwiched between the waterproof membrane 16 and the microphone module 11, and the annular sealing foam 17 surrounds the sound hole opening 1321.

Alternatively, the arcuate channel 131 includes a top wall 14 and a bottom wall 15 opposite to the top wall 14, the bottom wall 15 includes a first circular arc wall 151, the top wall 14 includes a second circular arc wall 141 disposed corresponding to the first circular arc wall 151, and a first inverted circular arc wall 142 extending reversely from one end of the second circular arc wall 141 and a second inverted circular arc wall 143 extending reversely from the other end of the second circular arc wall 141, the first end opening 1311 is formed between the first inverted circular arc wall 142 and the first circular arc wall 151 at the outer surface 121, and the second end opening 1312 is formed between the second inverted circular arc wall 143 and the first circular arc wall 151 at the outer surface 121.

The distance H from the tip of the first circular arc wall 151 to the outer surface 121 is 1mm to 2mm, which is insufficient to generate a vortex in the sound inlet channel 13.

The sound hole 132 is a cylindrical hole, the distance L1 between the first end opening 1311 and the second end opening 1312 is at least twice the diameter L2 of the sound hole 132, which is favorable for solving the problem that the water flow of the high-pressure water gun enters from the first end opening and the second end opening at the same time during washing and is also favorable for balancing and reducing wind noise and selecting the microphone module sound.

While the utility model has been described with respect to the above embodiments, it should be noted that modifications can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the utility model.

Claims

1. The utility model provides a vehicle-mounted microphone system, its includes the microphone module and installs the automobile body of microphone module, the automobile body include towards the outside surface of car and with the internal surface that the surface set up relatively, the microphone module install in the internal surface, the automobile body is equipped with the sound passageway of microphone module, its characterized in that, the sound passageway of intaking include arch passageway and with the sound hole of arch passageway intercommunication, arch passageway first end opening and second end opening form in the surface and mutual interval set up, the sound hole be in arch passageway's top department with arch passageway intercommunication and formation are located the sound hole opening of internal surface, the microphone module is through sound hole opening sound.

2. The vehicle-mounted microphone system of claim 1, wherein a waterproof membrane covering the sound hole opening is attached to the inner surface, and an annular sealing foam is sandwiched between the waterproof membrane and the microphone module, and surrounds the sound hole opening.

3. The vehicle-mounted microphone system of claim 1, wherein the arcuate channel includes a top wall and a bottom wall opposite the top wall, the bottom wall including a first arcuate wall, the top wall including a second arcuate wall disposed in correspondence with the first arcuate wall, and a first opposing arcuate wall extending in opposition from one end of the second arcuate wall and a second opposing arcuate wall extending in opposition from the other end of the second arcuate wall, the first opposing arcuate wall and the first arcuate wall forming the first end opening therebetween at the outer surface, the second opposing arcuate wall and the first arcuate wall forming the second end opening therebetween at the outer surface.

4. The vehicle-mounted microphone system of claim 3, wherein a distance from a top end of the first circular arc wall to the outer surface is 1mm to 2mm.

5. The vehicle microphone system of claim 1, wherein the acoustic port is a cylindrical port, and the first end opening and the second end opening are spaced apart a distance at least twice the diameter of the acoustic port.

6. The vehicle microphone system of claim 1, wherein the sound inlet channel is of axisymmetric construction.