CN210986417U

CN210986417U - Multifunctional microphone

Info

Publication number: CN210986417U
Application number: CN201922035276.4U
Authority: CN
Inventors: 徐兴连
Original assignee: Qingdao Goertek Intelligent Sensor Co Ltd
Current assignee: Qingdao Goertek Intelligent Sensor Co Ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-07-10
Anticipated expiration: 2029-11-21

Abstract

The utility model provides a multifunctional microphone, which comprises a PCB and a shell arranged on the PCB, wherein an MIC component is arranged in the shell, and a barometer component is also arranged in the shell; the pneumatic sensor comprises a pneumatic MEMS and a pneumatic IC electrically connected with the pneumatic MEMS, wherein the MIC assembly comprises a MIC MEMS and a MIC IC electrically connected with the MIC MEMS; the MIC IC and the air pressure IC are embedded in the PCB, and the bottom of the MIC MEMS and the bottom of the air pressure MEMS are embedded in the PCB; a sound hole corresponding to the position of the MIC MEMS is formed in the PCB; and a waterproof and breathable film is arranged in the sound hole. Utilize above-mentioned utility model not only can reduce the occupation space of device under the prerequisite that realizes two kinds of functions of transaudient and atmospheric pressure measurement, reduce the volume of product, can also realize waterproof function.

Description

Multifunctional microphone

Technical Field

The utility model relates to a microphone design field, more specifically relates to a multifunctional microphone.

Background

As more common sensors, pressure sensors, acceleration sensors and microphones are often installed on the same electronic product (such as mobile phones, computers, smart watches, smart bracelets, VRs, smart earphones, etc.), at present, with the rapid development of society, the material demand of human beings is higher and higher, the integration degree of mobile phones, computers and wearable devices is higher and higher, and higher requirements are put on the product size.

However, the pressure sensor, the acceleration sensor and the microphone in the existing electronic product are all separately arranged; when three devices are manufactured, three sets of packaging materials are needed, and the manufacturing is finished through three sets of similar processes, so that materials and labor are wasted, and the cost is increased; in addition, the three devices need to be respectively mounted and occupy free space, so that the product volume is increased.

Based on this, a method capable of significantly reducing the occupied space of a plurality of sensors is needed.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, it is an object of the present invention to provide a multifunctional microphone, which solves the problems of the product in which a plurality of sensors and microphones are separately designed to be packaged and occupy space, thereby wasting material and increasing the volume of the product.

The embodiment of the utility model provides a multifunctional microphone, including PCB and the shell of setting on PCB, be provided with the MIC subassembly in the shell;

a barometer assembly is also arranged in the shell; wherein the content of the first and second substances,

the MIC assembly comprises a MIC MEMS and a MIC IC electrically connected with the MIC MEMS, and the barometer assembly comprises an air pressure MEMS and an air pressure IC electrically connected with the air pressure MEMS;

the MIC IC and the air pressure IC are both embedded in the PCB, and the bottom of the MIC MEMS and the bottom of the air pressure MEMS are both embedded in the PCB;

a sound hole corresponding to the position of the MIC MEMS is formed in the PCB; and the number of the first and second electrodes,

and a waterproof breathable film is arranged in the sound hole.

The preferred structure is that the device further comprises an IC integrated chip, and the MIC IC and the air pressure IC are integrated on the IC integrated chip;

the IC integrated chip is embedded in the PCB.

The preferred structure is that an accelerometer component is further arranged in the housing, and the accelerometer component comprises an acceleration MEMS and an acceleration IC electrically connected with the acceleration MEMS; wherein the acceleration IC is embedded inside the PCB.

Preferably, the bottom of the MIC MEMS, the bottom of the air pressure MEMS, and the bottom of the acceleration MEMS are all embedded inside the PCB.

The preferred structure is that the device further comprises an IC integrated chip, and the MIC IC, the air pressure IC and the acceleration IC are integrated on the IC integrated chip;

the IC integrated chip is embedded in the PCB.

The preferred structure is that the device further comprises a lead, and the MIC MEMS, the air pressure MEMS and the air pressure IC, and the acceleration MEMS and the acceleration IC are connected through the lead.

Among them, it is preferable that the wire is made of copper.

Among them, it is preferable that the conductive wire is a semiconductor bonding alloy wire.

According to the technical scheme, the multifunctional microphone provided by the utility model has the advantages that the microphone, the barometer and the accelerometer are arranged in the same shell, so that the material can be saved, and the size of the product can be reduced; in addition, the IC of each device is embedded in the PCB, so that the occupied space of the device can be further reduced; and finally, the waterproof breathable film is arranged on the sound hole, so that the waterproof effect of the multifunctional microphone can be realized.

Drawings

Other objects and results of the invention will be more apparent and readily appreciated by reference to the following description taken in conjunction with the accompanying drawings, and as the invention is more fully understood. In the drawings:

fig. 1 is a front sectional view of a multifunctional microphone according to an embodiment of the present invention;

fig. 2 is a front sectional view of a multifunctional microphone according to a second embodiment of the present invention;

fig. 3 is a front sectional view of a multifunctional microphone according to a third embodiment of the present invention;

wherein the reference numerals include: the device comprises a PCB11, a shell 12, a MIC assembly 13, a MIC MEMS131, a MIC IC132, a barometer assembly 14, a barometric MEMS141, a barometric IC142, an accelerometer assembly 15, an acceleration MEMS 151, an acceleration IC152, an acoustic hole 16, a waterproof and breathable film 161, a lead wire 17 and an IC integrated chip 18.

The same reference numbers in all figures indicate similar or corresponding features or functions.

Detailed Description

To describe the structure of the multifunctional microphone of the present invention in detail, the following description will be made of specific embodiments of the present invention with reference to the accompanying drawings.

Fig. 1 shows a front view cross-sectional structure of a multifunctional microphone according to an embodiment of the present invention.

As shown in fig. 1, the multifunctional microphone provided in the embodiment of the present invention includes a PCB11 (Printed Circuit Board, which is a support for electronic components) and a case 12 disposed on the PCB11, wherein an MIC (microphone, which is a microphone) component and a barometer component 14 are disposed in the case 12; the MIC module 13 includes a MIC MEMS131 (MEMS, referred to as Micro-Electro-Mechanical System, referred to as Micro-Electro-Mechanical technology, where the MIC MEMS refers to a part of a microphone manufactured by using Micro-Electro-Mechanical technology, and is mainly used for information acquisition, the same below), and a MIC IC132 (IC, referred to as integrated circuit, and is an integrated chip for processing information in the microphone, and is the same below) electrically connected to the MIC MEMS131, and the barometer module 14 includes a barometric MEMS141 and a barometric IC142 electrically connected to the barometric MEMS 141; the MIC IC132 and the pneumatic IC142 are both embedded inside the PCB 11.

According to the above description, the MIC module 13 and the barometer module 14 are arranged in the housing 12, so that the multifunctional microphone provided by the utility model can reduce the occupied space of the device, reduce the volume of the product, and realize two functions of sound transmission and barometric pressure measurement; furthermore, embedding the MIC IC132 and the barometer IC142 in the PCB11 can further reduce the space occupied by the MIC module 13 and the barometer module 14.

Note that, in the device (microphone, barometer, and accelerometer described later) according to the present invention, the MEMS represents a signal collection portion of the device, and the IC represents a signal processing portion of the device; for example, for the MIC assembly 13, the MIC MEMS131 effectively represents a diaphragm in the microphone for collecting information, and the MIC IC132 effectively represents a signal processing chip. Therefore, only the IC portion of each device is embedded in the PCB11, which does not affect the collection of various external signals by each device and the effective processing of the collected signals.

In addition, in order to balance the air pressure inside the housing 12 and enable the MIC MEMS131 and the air pressure MEMS141 to accurately collect external air pressure signals and sound signals, the PCB11 may be provided with a sound hole 16 corresponding to the MIC MEMS 131; by arranging the sound hole 16 corresponding to the MIC MEMS131 (microphone diaphragm), the MIC MEMS131 can receive external sound signals at the first time on the premise of ensuring the balance of the air pressure inside and outside the housing 12, thereby improving the sensitivity of the microphone.

In a preferred embodiment of the present invention, a waterproof breathable film 161 can be disposed in the sound hole 16, and the waterproof breathable film 161 is a waterproof film with a microporous structure on the surface, so that waterproof effect can be achieved on the premise of ensuring ventilation. Since the waterproof air-permeable film 161 is provided on the acoustic hole 16 leading to the inside of the housing 12, the multifunctional microphone provided by the present application also has a waterproof function.

Furthermore, in a specific embodiment of the present invention, the accelerometer assembly 15 can be further disposed in the housing 12, the accelerometer assembly 15 includes the acceleration MEMS 151 and the acceleration IC152 electrically connected to the acceleration MEMS 151, and by this design, three functions of sound transmission, air pressure measurement and acceleration measurement can be realized at the same time, so as to further improve the utilization rate of the multifunctional microphone.

In addition, the acceleration IC152 can be embedded in the PCB11, so that the occupied space of the device is reduced, and the volume of the whole multifunctional microphone is reduced.

In addition, fig. 2 shows the second embodiment of the present invention shows the main view cross-sectional structure of the multifunctional microphone, and as shown in fig. 2, the bottom of the MIC MEMS131 and the bottom of the air pressure MEMS141 can be embedded inside the PCB11, so as to reduce the height of the whole multifunctional microphone, and further reduce the volume of the whole multifunctional microphone.

In addition, if the utility model provides an inside accelerometer subassembly 15 that has set up of shell 12, also can all bury MICMEMS 131's bottom, atmospheric pressure MEMS141 bottom and acceleration MEMS 151's bottom underground inside PCB11 to reduce the volume of whole multi-functional microphone.

In addition, fig. 3 shows a front view cross-sectional structure of a third multifunctional microphone according to an embodiment of the present invention, as shown in fig. 3, the multifunctional microphone provided by the present invention may further include an IC integrated chip 18, and the MIC IC132 and the air pressure IC142 are both disposed on the IC integrated chip 18 in an integrated manner, and the IC integrated chip 18 is buried inside the PCB 11; the design can reduce the overall occupied space of the MIC IC132 and the air pressure IC142, thereby reducing the volume of the PCB11 and improving the integration level of products.

In addition, if the utility model provides an inside accelerometer subassembly 15 that has set up of shell 12, can also all integrate MIC IC132, atmospheric pressure IC142 and acceleration IC152 on IC integrated chip 18 to bury IC integrated chip 18 underground inside PCB 11.

Specifically, the utility model provides a multifunctional microphone still includes wire 17, all realizes the electricity through wire 17 between MIC MEMS131 and MIC IC132, between atmospheric pressure MEMS141 and atmospheric pressure IC142 and between acceleration MEMS 151 and the acceleration IC 152.

More specifically, considering the material of the wire 17, a copper wire with a relatively strong conductivity is selected, and the copper wire has a relatively low price on the premise of ensuring the conductivity.

On the other hand, in order to further improve the conductivity of the Wire 17 and further improve the direct information transmission effect of the IC and the MEMS, the Wire 17 can be a semiconductor Bonding Wire (Bonding Wire) which is mainly used for chip Bonding in a semiconductor packaging process, the component of the Wire is gold with a purity of 99.999%, and the Wire is doped with silver, palladium, magnesium, iron, copper, silicon and other elements, and the parameters of the gold Wire such as hardness, rigidity, ductility, conductivity and the like can be changed by doping different elements, thereby meeting the requirements of the utility model.

In view of the above, the present invention provides a multifunctional microphone having at least the following advantages:

1. the microphone can have three functions of sound transmission, air pressure measurement and acceleration measurement at the same time by arranging the MIC assembly, the barometer assembly and the accelerometer assembly inside the shell;

2. the MIC IC, the MIC MEMS bottom, the air pressure IC, the air pressure MEMS bottom, the acceleration IC and the acceleration MEMS bottom are all embedded into the PCB, so that the volume of a product can be obviously reduced;

3. through set up waterproof ventilated membrane in the sound hole, can realize waterproof effect under the ventilative prerequisite of assurance.

The multifunctional microphone product according to the present invention has been described above by way of example with reference to the accompanying drawings. However, it should be understood by those skilled in the art that various modifications can be made to the multifunctional microphone provided by the present invention without departing from the scope of the present invention. Therefore, the scope of the present invention should be determined by the content of the appended claims.

Claims

1. A multifunctional microphone comprises a PCB and a shell arranged on the PCB, wherein an MIC component is arranged in the shell,

the MIC IC and the air pressure IC are both embedded in the PCB, and the bottom of the MIC MEMS and the bottom of the air pressure MEMS are both embedded in the PCB; and the number of the first and second electrodes,

and the PCB is provided with a sound hole corresponding to the position of the MIC MEMS, and a waterproof and breathable film is arranged in the sound hole.

2. The multi-functional microphone of claim 1,

the IC integrated chip is integrated with the MIC IC and the air pressure IC; and the number of the first and second electrodes,

the IC integrated chip is embedded in the PCB.

3. The multi-functional microphone of claim 1,

an accelerometer component is arranged in the shell and comprises an acceleration MEMS and an acceleration IC electrically connected with the acceleration MEMS;

wherein the acceleration IC is embedded inside the PCB.

4. The multifunctional microphone of claim 3,

the bottom of the acceleration MEMS is embedded in the PCB.

5. The multifunctional microphone of claim 3,

the IC integrated chip is integrated with the MIC IC, the air pressure IC and the acceleration IC; and the number of the first and second electrodes,

the IC integrated chip is embedded in the PCB.

6. The multifunctional microphone of claim 3,

the device is characterized by further comprising a conducting wire, wherein the MIC MEMS is connected with the MIC IC, the air pressure MEMS is connected with the air pressure IC, and the acceleration MEMS is connected with the acceleration IC through the conducting wire.

7. The multi-function microphone of claim 6,

the wire is made of copper.

8. The multi-function microphone of claim 6,

the lead is a semiconductor bonding alloy wire.