CN207560266U - Structure is fixedly mounted in a kind of electronic equipment and its digital microphone - Google Patents

Abstract

The utility model discloses a digital microphone fixed installation structure for electronic equipment, which comprises a main board and an elastic circuit board. A microphone monomer is arranged on the upper surface of one end of the elastic circuit board. The other end of the elastic circuit board is electrically connected with the main board. The other end of the elastic circuit board is provided with several contact spring mechanisms, and the other end of the elastic circuit board is electrically connected to the main board by abutting against the contact spring mechanisms. The digital microphone fixed installation structure provided by the utility model, through the physical abutment between the elastic circuit board and the main board at the same time through the contact shrapnel mechanism, ensures stable signal transmission between the elastic circuit board and the main board, so that the receiving signal of the microphone can be By sequentially passing through the elastic circuit board and the contact shrapnel mechanism to the main board, a stable signal connection between the microphone and the main board is realized to ensure the normal operation of the microphone. The utility model also discloses an electronic device, the beneficial effects of which are as above.

Description

An electronic device and its digital microphone fixed installation structure

technical field

The utility model relates to the technical field of electronic products, in particular to a digital microphone fixed installation structure of electronic equipment. The utility model also relates to an electronic device comprising the above-mentioned fixed installation structure of the digital microphone.

Background technique

With the progress of the times, the importance of intelligent voice technology in the field of consumer electronics has become increasingly prominent. Cortana in Win10 system, Siri in Apple mobile phone, iFLYTEK’s voice recognition technology, these innovative applications of voice technology not only bring people a novel human-computer interaction experience, but also bring great convenience to people’s life sex. The realization of intelligent voice technology is inseparable from the microphone, and the digital microphone has been widely used because of its low power consumption, high sensitivity, strong anti-interference ability and many other advantages. Known microphone designs are generally applied in the field of consumer electronics in the form of pins, SMT (Surface Mount Technology, surface mount technology), FPCB (Flexible Printed Circuit Board, flexible printed circuit board), and the like.

At present, digital microphones can be attached to the motherboard through SMT, but with the improvement of voice noise reduction performance requirements, a single microphone can no longer meet the requirements, and at least two microphones are often required on the motherboard, which is very important for the flexibility of mechanism design. It poses certain challenges, and because the motherboard is getting thinner and thinner, the capacitor sound problem of the board-side power supply is also very easy to appear, which will affect the user experience after being recorded by the microphone. Therefore, the industry often adopts the method of placing the microphone outside the board. The form of FPCB leads to the motherboard. In the prior art, it is common practice to solder the microphone to the FPCB, and then connect the FPCB to the main board with a plug-in board, so as to realize the function of the microphone.

However, through the way of plug-in FPCB connected to the main board, the manual operation takes a long time during processing, the assembly process is more complicated, and due to the non-standard plugging and unplugging of the production line, there may be problems such as misalignment and docking between the FPCB and the main board. As a result, the microphone cannot receive sound waves normally.

Therefore, how to simply and efficiently realize a stable signal connection between the microphone and the main board to ensure the normal operation of the microphone is a technical problem to be solved urgently by those skilled in the art.

Utility model content

The purpose of the utility model is to provide a digital microphone fixed installation structure of electronic equipment, which can realize the stable signal connection between the microphone and the main board simply and efficiently, and ensure the normal operation of the microphone. Another object of the present utility model is to provide an electronic device including the above-mentioned digital microphone fixed installation structure.

In order to solve the above-mentioned technical problems, the utility model provides a digital microphone fixed installation structure for electronic equipment, including a main board and an elastic circuit board, the upper surface of one end of the elastic circuit board is provided with a microphone unit, and the other end of the elastic circuit board One end is electrically connected to the main board, and the other end of the main board corresponding to the elastic circuit board is provided with several contact spring mechanisms, and the other end of the elastic circuit board is resisted by the contact spring mechanism. The connection realizes the electrical connection with the main board.

Preferably, the bottom surface of the other end of the elastic circuit board is provided with several contact surfaces for respectively contacting each of the contact spring mechanism; the contact spring mechanism includes a base welded on the main board, and For the contact head in contact with each of the contact surfaces, the contact head is bent into an arc shape and has elasticity.

Preferably, the bottom surface of one end of the elastic circuit board is provided with an adhesive layer for enhancing the stability of the connection with the main board.

Preferably, it also includes a sealing shell arranged on the upper surface of one end of the elastic circuit board and covering the microphone monomer to form an airtight seal, and the sealing shell is provided with a useful The external sound wave is transmitted to the sound pickup channel in the sound inlet cavity of the microphone unit according to the preset path.

Preferably, a gasket for preventing air leakage is arranged around the opening of the sound pickup channel on the upper surface of the sealed housing.

The utility model also provides an electronic device, including a bottom case, a top case that covers the bottom case, and a digital microphone fixedly installed between the bottom case and the top case. structure: the main board is fixed on the bottom case, the inner wall of the top case is provided with a mounting groove for installing one end of the elastic circuit board, and a support frame for pressing the other end of the elastic circuit board, The support frame is provided with a plurality of positioning columns for matching with the positioning holes reserved on the other end of the elastic circuit board, and the elastic circuit board is pressed tightly by the cover of the top case and the bottom case the other end, and make it abut against the contact shrapnel mechanism.

Preferably, a sound guide hole for introducing external sound waves into it is provided on the top wall of the installation groove corresponding to the sound inlet cavity of the microphone unit, and is sealed and pressed tightly around the sound guide hole by a gasket .

The digital microphone fixed installation structure of electronic equipment provided by the utility model mainly includes a main board, an elastic circuit board, a single microphone and a contact shrapnel mechanism. Wherein, the upper surface of one end of the elastic circuit board is provided with a microphone unit for receiving external sound waves, the other end of the elastic circuit board is electrically connected to the main board, and several microphones are arranged on the main board corresponding to the other end of the elastic circuit board. The contact spring mechanism, and the other end of the elastic circuit board realizes the electrical connection with the main board by abutting against the contact spring mechanism. In this way, the upper and lower ends of each contact shrapnel mechanism abut against the main board and the other end of the elastic circuit board respectively, and under the action of the pressing force of the two, the main board and the other end of the elastic circuit board are kept tight by the contact shrapnel mechanism. physical connection, thus ensuring a stable point connection. In this way, the digital microphone fixed installation structure provided by the utility model, through the physical abutment between the elastic circuit board and the main board at the same time through the contact shrapnel mechanism, ensures stable signal transmission between the elastic circuit board and the main board, so that the reception of the microphone monomer The signal can be transmitted to the main board through the elastic circuit board and the contact shrapnel mechanism in turn, so as to realize a stable signal connection between the microphone and the main board and ensure the normal operation of the microphone.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description It is only an embodiment of the utility model, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is the overall structure schematic diagram of a kind of specific embodiment provided by the utility model;

Fig. 2 is the partial structure schematic diagram of Fig. 1;

Fig. 3 is the bottom view of Fig. 2;

Fig. 4 is a schematic structural view of the contact shrapnel mechanism shown in Fig. 1;

FIG. 5 is a schematic diagram of the specific structure of the sealed housing shown in FIG. 1;

Fig. 6 is the installation environment of a digital microphone in an electronic device in a specific embodiment provided by the present invention;

FIG. 7 is a schematic diagram of another viewing angle of FIG. 6 .

Wherein, among Fig. 1-Fig. 7:

Main board—1, elastic circuit board—2, contact surface—201, positioning hole—202, microphone unit—3, bottom case—4, contact shrapnel mechanism—5, base—501, contact head—502, flexible cable —6, adhesive layer—7, sealing shell—8, pickup channel—801, gasket—802, top case—9, sound guide hole—901, installation groove—902, support frame—903, positioning column—904 .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to FIG. 1 and FIG. 2 . FIG. 1 is a schematic diagram of the overall structure of a specific embodiment provided by the present invention. As shown in FIG. 2 , FIG. 2 is a schematic diagram of the partial structure of FIG. 1 .

In a specific embodiment provided by the present invention, the digital microphone fixed installation structure of electronic equipment mainly includes a main board 1 , an elastic circuit board 2 , a microphone unit 3 and a contact shrapnel mechanism 5 .

Wherein, the upper surface of one end of the elastic circuit board 2 is provided with a microphone unit 3 for receiving external sound waves. Generally, the microphone unit 3 can be welded on the elastic circuit board 2 , and a microphone chip and other structures are arranged in the microphone unit 3 , and the signal connection with the elastic circuit board 2 is maintained. The other end of the elastic circuit board 2 is electrically connected to the main board 1 , and each contact spring mechanism 5 is arranged on the main board 1 and located between the main board 1 and the other end of the elastic circuit board 2 . The upper and lower ends of each contact shrapnel mechanism 5 abut against the other end of the main board 1 and the elastic circuit board 2 respectively, and under the action of the pressing force of both, the main board 1 and the elastic circuit board 2 are made The other end maintains a close physical connection, thereby ensuring a stable point connection.

In this way, the digital microphone fixed installation structure provided in this embodiment, through the physical abutment between the elastic circuit board 2 and the main board 1 at the same time through the contact shrapnel mechanism 5, ensures stable signal transmission between the elastic circuit board 2 and the main board 1, so that The received signal of the microphone unit 3 can be transmitted to the main board 1 through the elastic circuit board 2 and the contact shrapnel mechanism 5 in sequence, so as to realize a stable signal connection between the microphone and the main board 1 and ensure the normal operation of the microphone.

Further, the signal connection between one end of the flexible circuit board 2 and the other end can be realized through the flexible cable 6. In this way, the relative positional relationship between one end of the flexible circuit board 2 and the other end can be adjusted conveniently, which is more suitable for Electronic equipment with complex installation space and narrow installation environment. Of course, the two ends of the flexible circuit board 2 can also realize signal connection through cables, data plugs, wireless communication, etc., such as USB interface, CAN bus, WIFI module and so on.

In addition, considering that the microphone unit 3 is provided on the upper surface of one end of the elastic circuit board 2, and the elastic circuit board 2 bears a relatively large load, an adhesive layer 7 is provided on the bottom surface of the elastic circuit board 2 in this embodiment, By connecting the adhesive layer 7 with the surface of the main board 1 , the connection stability between the two can be effectively improved.

As shown in FIG. 3 , FIG. 3 is a bottom view of FIG. 2 .

Not only that, considering that multiple contact spring mechanism 5 can be set at the same time on the main board 1, such as 2 to 4, etc., in order to facilitate the signal connection between each contact spring mechanism 5 and the other end of the elastic circuit board 2 at the same time, this implementation For example, several contact surfaces 201 are provided on the bottom surface of the other end of the elastic circuit board 2, and each contact surface 201 is used to contact with the corresponding contact spring mechanism 5, so as to avoid connection confusion. Generally, the contact surface 201 can be in the shape of a rectangular strip, of course, it can also be in the shape of a circle or the like.

As shown in FIG. 4 , FIG. 4 is a schematic structural view of the contact spring mechanism shown in FIG. 1 .

In a preferred embodiment of the contact spring mechanism 5 , the contact spring mechanism 5 may specifically include a base 501 and a contact head 502 . Wherein, the base 501 is arranged on the main board 1 , and the contact head 502 is arranged on the base 501 , and the contact head 502 is mainly used for contacting the bottom surface of the other end of the elastic circuit board 2 . Specifically, the contact head 502 can be bent into an arc shape, and when in contact with the elastic circuit board 2 , it can effectively reduce extrusion stress and avoid stress concentration. The contact head 502 has elasticity as a whole. When the digital microphone module is assembled into the electronic device, the two ends of the contact head 502 and the base 501 are respectively pressed by the elastic circuit board 2 and the main board 1, so that the contact head 502 produces elastic deformation, and then by means of The resilience makes the contact head 502 maintain the pressing force with the elastic circuit board 2 and the pressing force between the base 501 and the main board 1 .

Of course, the specific structure of the contact spring mechanism 5 is not limited to the above-mentioned base 501 and contact head 502 , and other methods such as connecting the elastic circuit board 2 and the main board 1 through several flexible rods are also feasible.

As shown in FIG. 5 , FIG. 5 is a schematic structural view of the sealed housing shown in FIG. 1 .

In addition, considering the reception quality of the microphone unit 3 to external sound waves and avoiding the interference of airflow and noise, the present embodiment adds a sealing case 8 on the elastic circuit board 2, and the sealing case 8 is mainly used to protect the microphone unit Body 3 forms an airtight seal. Specifically, the sealed casing 8 can be a closed rectangular frame, such as a rubber block, which is buckled upside down on the elastic circuit board 2 and covers the microphone unit 3 . At the same time, in order to ensure that external sound waves can be normally transmitted to the internal microphone monomer 3 through the sealed casing 8, the present embodiment provides a sound pickup channel 801 on the sealed casing 8, and the path of the sound pickup channel 801 can be adjusted according to the sealed casing It is designed according to the specific shape of the body 8, and is mainly used to make the external sound wave reach the sealed housing 8, and only transmit it to the sound inlet cavity of the internal microphone unit 3 from the preset path opened along the sound pickup channel 801.

Further, in this embodiment, a gasket 802 is arranged around the opening of the sound pickup channel 801 of the sealed casing 8. The gasket 802 can specifically be a structure such as a rubber ring, which can be pressed against the shell 9 of the electronic device. It is mainly used to improve the airtightness of the opening of the sound pickup channel 801 to prevent sharp sound sources from being formed due to air leakage.

As shown in FIG. 6 , FIG. 6 is an installation environment of a digital microphone in an electronic device in a specific embodiment provided by the present invention.

This embodiment also provides an electronic device, which mainly includes a bottom case 4 , a top case 9 covering the bottom case 4 , and a digital microphone fixed installation structure installed between the bottom case 4 and the top case 9 .

Wherein, the fixed installation structure of the digital microphone is the same as the above-mentioned related content, and will not be repeated here.

As shown in FIG. 7 , FIG. 7 is a schematic diagram of another perspective of FIG. 6 .

The bottom case 4 is mainly used to fix the main board 1, and the top case 9 is the main structure of the electronic equipment, and is mainly used to accommodate and install other parts. In order to facilitate the installation of the parts of the fixed installation structure of the digital microphone and reduce the internal space occupation, this In this embodiment, a mounting groove 902 , a support frame 903 and a positioning column 904 are provided on the inner wall of the top case 9 .

Wherein, the installation groove 902 is mainly used for installing one end of the elastic circuit board 2, of course, since the microphone unit 3 and the sealing housing 8 are arranged on one end of the elastic circuit board 2, the installation groove 902 can be used for installing the sealing housing 8 . The support frame 903 is generally used to install the other end of the elastic circuit board 2. When one end of the elastic circuit board 2 is installed in place, the support frame 903 can further compress it so that the other end of the elastic circuit board 2 is against the contact spring mechanism 5. Maintain preload. In order to facilitate the positioning and installation of the other end of the elastic circuit board 2 in the top case 9, several positioning holes 202 are preset on the edge of the other end of the elastic circuit board 2 in this embodiment. The number and distribution of the positioning columns 904, so that through the cooperation of each positioning column 904 and the positioning hole 202, the positioning and installation of the elastic circuit board 2 can be conveniently realized, and the connection stability can be ensured at the same time. In this way, the other end of the elastic circuit board 2 can be pressed tightly by the pressing force of the top case 9 and the bottom case 4 , and it can be kept in stable contact with each contact spring mechanism 5 .

In addition, in this embodiment, a sound guide hole 901 is provided on the top wall of the installation groove 902. The position of the sound guide hole 901 on the installation groove 902 corresponds to the position of the sound inlet cavity of the microphone unit 3, and is mainly used for It is used to enable the external sound wave to be transmitted to the internal microphone unit 3 . Here, preferably, the location of the sound guide hole 901 may specifically correspond to the sound pickup channel 801 on the sealed casing 8 .

It should be noted that the electronic devices in this embodiment generally refer to notebook computers, tablet computers, mobile phones, etc., and of course also apply to other electronic products with voice interaction functions.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. A digital microphone fixed installation structure for electronic equipment, comprising a main board (1) and an elastic circuit board (2), the upper surface of one end of the elastic circuit board (2) is provided with a microphone monomer (3), and the elastic circuit board (2) is provided with a single microphone (3). The other end of the circuit board (2) is electrically connected to the main board (1), and it is characterized in that several contact shrapnel mechanisms are arranged on the main board (1) corresponding to the other end of the elastic circuit board (2) (5), and the other end of the elastic circuit board (2) is electrically connected to the main board (1) by abutting against the contact spring mechanism (5). 2. The fixed installation structure of digital microphone according to claim 1, characterized in that, the bottom surface of the other end of the elastic circuit board (2) is provided with a number of contacts for contacting each of the contact spring mechanisms (5) respectively. contact surfaces (201); the contact spring mechanism (5) includes a base (501) welded on the main board (1), and a contact head (502) for contacting each contact surface (201) ), the contact head (502) is bent into an arc and has elasticity. 3. The digital microphone fixed installation structure according to claim 1, characterized in that, the bottom surface of one end of the elastic circuit board (2) is provided with an adhesive layer ( 7). 4. The fixed installation structure of the digital microphone according to claim 1, characterized in that, it also includes an upper surface arranged on one end of the elastic circuit board (2) and covered on the outside of the microphone unit (3). . A sealed casing (8) for forming an airtight seal, and the sealed casing (8) is provided with a sound inlet cavity for transmitting external sound waves to the microphone unit (3) according to a preset path Pick-up channel (801) in . 5. The digital microphone fixed installation structure according to claim 4, characterized in that, on the upper surface of the sealed casing (8), a ring for preventing leakage is arranged around the opening of the sound pickup channel (801). Gasket (802). 6. An electronic device, characterized in that it comprises a bottom case (4), a top case (9) covered with the bottom case (4) and a top case (9) mounted on the bottom case (4) and the top case (9). ), the digital microphone fixed installation structure as claimed in any one of claims 1-5; the main board (1) is fixed on the bottom case (4), and the inner wall of the top case (9) is set There is a mounting groove (902) for installing one end of the elastic circuit board (2), and a support frame (903) for pressing the other end of the elastic circuit board (2), and the support frame (903) is provided with There are several positioning columns (904) for matching with the positioning holes (202) reserved on the other end of the elastic circuit board (2), through the top shell (9) and the bottom shell (4) Covering and pressing the other end of the elastic circuit board (2), and making it abut against the contact spring mechanism (5). 7. The electronic device according to claim 6, characterized in that, on the top wall of the installation groove (902) corresponding to the sound inlet cavity of the microphone unit (3), a sound wave for introducing external sound waves into it is provided. The inner sound guide hole (901) is sealed and compressed around the sound guide hole (901) by a gasket (802).