Sound card

Abstract

The utility model provides a sound card. The sound card comprises a shell, a port assembly and a control assembly, wherein the shell is provided with an accommodating cavity; the port assembly is arranged on the shell and is used for being connected with the external equipment; the control assembly comprises a first circuit board, function keys and a second circuit board, the function keys are arranged in the shell and exposed out of the shell, the first circuit board and the second circuit board are both arranged in the containing cavity, and the second circuit board and the function keys are both electrically connected with the first circuit board; and the second circuit board is electrically connected with the port assembly. According to the sound card provided by the invention, the two circuit boards are arranged to be divided into different functional modules, so that the design pressure of the first circuit board is reduced, the rapid feedback and processing of the operation of the sound card are realized, and the stability of the processing performance of audio and the like is ensured; and meanwhile, the second circuit board is electrically connected with the port assembly, so that better compatibility can be achieved during butt joint of external equipment, and the use experience of a user is improved.

Description

Technical Field

[0001] This application relates to the technical field of external sound card structures, and particularly to a sound card. Background Art

[0002] A sound card, also known as an audio card (referred to as a sound effect card in Hong Kong and Taiwan), is the most basic component in a computer multimedia system and is a hardware device that realizes the mutual conversion between sound waves and digital signals. The basic function of a sound card is to convert the original sound signals from a microphone, tape, optical disc, etc., and output them to sound devices such as headphones, speakers, amplifiers, recorders, or emit the sounds of synthesized musical instruments through the Musical Instrument Digital Interface (MIDI).

[0003] An external sound card is an audio interface device connected to a computer or mobile device through a USB interface. It has the advantages of being easy to use and portable, and is particularly suitable for environments that require better sound quality, such as connecting to a laptop computer or microphone, etc.

[0004] In an external sound card, the circuit board is the basis for the normal operation of the sound card, used to process audio signals, compatibility with external devices, power management and distribution, and the implementation of other functions such as reverberation and EQ adjustment, so as to ensure the stability, compatibility, and user experience of the sound card. Since an external sound card needs to provide richer interfaces and better sound quality, and supports multiple platform systems such as Windows, Mac, and iOS, therefore, an external sound card needs to provide multiple interfaces to meet different recording requirements. This leads to certain design layout requirements for the circuit board of the external sound card, and at the same time, the volume of the circuit board needs to be controlled to take into account the size of the external sound card.

[0005] In addition, due to the complex internal structure and the lack of rigorous and reasonable design layout of the existing external sound cards, a relatively large accommodation space is required, which results in a relatively large volume of the product, making it inconvenient for users to carry; at the same time, the relatively large volume also leads to a relatively high production cost of the product, resulting in a relatively high market price and affecting the consumption experience of users. Summary of the Utility Model

[0006] An embodiment of this application provides a sound card for connecting to an external device to realize the mutual conversion between sound waves and digital signals, including:

[0007] A housing having an accommodation cavity;

[0008] A port assembly provided on the housing for connecting to the external device;

[0009] The control component includes a first circuit board, a function key, and a second circuit board. The function key is provided on the housing and exposed outside the housing. Both the first circuit board and the second circuit board are provided in the accommodation cavity. The second circuit board and the function key are both electrically connected to the first circuit board. Among them, the second circuit board is electrically connected to the port component.

[0010] Compared with the prior art, for the sound card provided in this application, by setting the first circuit board and the second circuit board, and the two circuit boards are responsible for different functional modules, the design pressure on the first circuit board can be better reduced, and the quick feedback and processing of the sound card can be realized, ensuring the stability of the processing performance of audio, etc. At the same time, the electrical connection between the second circuit board and the port component can make the sound card have better compatibility when docking with external devices, thereby improving the user experience.

[0011] In one embodiment, the first circuit board and the second circuit board are stacked. Stacking the two circuit boards so that they are arranged vertically can better reduce the product thickness, effectively utilize the internal space of the housing, thereby reducing the product volume and further reducing the product production cost.

[0012] In one embodiment, the housing includes a front shell and a bottom shell. The front shell and the bottom shell are connected to form the accommodation cavity. The first circuit board is connected to the front shell, and the second circuit board is provided between the first circuit board and the bottom shell. Separating the front shell and the bottom shell facilitates the production and assembly of the housing. Connecting the first circuit board to the front shell can facilitate the assembly of the first circuit board during the production process, improve the assembly efficiency, and thus reduce the product production cost.

[0013] In one embodiment, a limiting plate is provided on one side of the housing facing the accommodation cavity, and a limiting groove is provided on the first circuit board. The limiting plate is arranged in the limiting groove. Setting the limiting plate and the limiting groove can effectively limit the installation position of the first circuit board, ensure the correct installation of the first circuit board, and prevent damage to other components caused by its movement after installation.

[0014] In one embodiment, a limiting notch is provided on the second circuit board, and the limiting plate is arranged in the limiting notch. Setting the limiting notch on the second circuit board can ensure the correct installation position of the second circuit board and effectively limit its installation position, and also prevent damage to other components caused by the shaking or movement of the second circuit board in the housing.

[0015] In one embodiment, the second circuit board is connected to the bottom case, and the area of the second circuit board is smaller than that of the first circuit board; the housing further includes a side plate connecting the bottom case and the front case, and the port assembly is provided on the side plate. Connecting the second circuit board to the bottom case facilitates the assembly of the second circuit board and improves the assembly efficiency. Moreover, using a smaller circuit board for the second circuit board can further reduce the production cost of the product. And arranging the port assembly on the side plate can make the connection between the port assembly and the second circuit board more convenient and reduce the electrical connection cost.

[0016] In one embodiment, the port assembly includes a microphone interface for audio input; the control assembly further includes a third circuit board electrically connected to the microphone interface. Arranging the third circuit board can enable the audio signal input from the microphone to the sound card to be better processed by the third circuit board, thereby outputting a better sound effect and enhancing the user experience.

[0017] In one embodiment, the first circuit board, the second circuit board and the third circuit board are stacked, the second circuit board is arranged between the first circuit board and the third circuit board, and the second circuit board is arranged parallel to the first circuit board; an installation opening is provided on the second circuit board, and the third circuit board is arranged corresponding to the installation opening. Stacking the three circuit boards can reduce the thickness and volume of the product, thereby reducing the production cost of the product; and arranging the third circuit board corresponding to the installation opening facilitates the direct electrical connection between the microphone interface and the third circuit board, and can also ensure that the design positions of the microphone interface and other interfaces are consistent on the side plate.

[0018] In one embodiment, the port assembly includes a headset interface with an insertion detection function. Arranging the headset interface not only enables the user to use a headset, but also can quickly and automatically detect the type of the inserted headset and automatically adjust the input of the audio signal, enhancing the user experience.

[0019] In one embodiment, the control assembly further includes a battery electrically connected to the first circuit board, the battery is arranged below the first circuit board and on one side of the second circuit board; a reverse charging module is provided on the first circuit board for charging external devices. Arranging the battery can provide electrical energy for the sound card, facilitating the user to carry and use; the design of the reverse charging module enables the sound card to charge other external devices such as mobile phones and tablets, expanding the application scenarios and functions of the sound card. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 is a perspective view of the sound card provided by the embodiment of the present application;

[0022] Figure 2 is a perspective view of the sound card from another angle provided by the embodiment of the present application;

[0023] Figure 3 is an exploded view of the sound card provided by the embodiment of the present application;

[0024] Figure 4 is an exploded view of the sound card from another angle provided by the embodiment of the present application;

[0025] Figure 5 is Figure 1 a schematic cross-sectional view of the sound card shown along line V-V.

[0026] Explanation of reference numerals:

[0027] 100, sound card; 10, housing; 10a, accommodation cavity; 11, front shell; 12, bottom shell; 13, limiting plate; 18, anti-slip pad; 113, first buckle; 114, stud; 121, bottom plate; 122, first side plate; 123, second side plate; 124, third side plate; 125, fourth side plate; 126, second buckle; 21, first circuit board; 23, first indicator light; 24, battery; 26, second circuit board; 27, third circuit board; 28, power button; 211, limiting groove; 212, installation opening; 221, button; 222, knob; 223, fader; 51, microphone interface; 52, earphone interface; 53, accompaniment interface; 54, headphone interface; 55, line output interface; 56, data interface; 57, power interface. Detailed implementation manners

[0028] To facilitate the understanding of the present application, the following will describe the present application more comprehensively with reference to the relevant drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "inside", "outside", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0031] See also Figure 1 and Figure 2 , showing two-angle stereograms of the sound card 100 provided in the embodiment of the present application. The sound card 100 provided in the embodiment of the present application is used to connect external devices to realize the mutual conversion of sound waves / digital signals, wherein the external devices include but are not limited to microphones, computers, tablets, mobile phones and other electronic devices.

[0032] See also Figure 3 and Figure 4 The sound card 100 includes a shell 10, a port assembly, and a control assembly; wherein the shell 10 has a accommodating cavity 10a; the port assembly is arranged in the shell 10 for connecting the external device; the control assembly includes a first circuit board 21, a function key and a second circuit board 26, the function key is arranged in the shell 10 and exposed outside the shell 10, the first circuit board 21 and the second circuit board 26 are both arranged in the accommodating cavity 10a, and the second circuit board 26 and the function key are both electrically connected to the first circuit board 21; wherein the second circuit board 26 is electrically connected to the port assembly.

[0033] Compared with the prior art, the sound card 100 provided in the present application, by setting a first circuit board 21 and a second circuit board 26, and the two circuit boards are responsible for different functional modules, can better reduce the design pressure of the first circuit board 21, can achieve rapid feedback and processing of the control of the sound card 100, and ensure the stability of the processing performance of audio, etc.; at the same time, the electrical connection between the second circuit board 26 and the port assembly can make it have better compatibility when docking with external devices, thereby improving the user experience.

[0034] In this embodiment, the housing 10 includes a front shell 11 and a bottom shell 12, and the front shell 11 and the bottom shell 12 are connected to form the accommodation cavity 10a. The function keys are arranged on the front shell 11 and exposed outside the housing 10, and are used to adjust the amplification degree of the signal input into the sound card and / or the signal intensity output by the sound card, and / or to turn on or off the mute function of the sound card. The function keys include a button 221, a knob 222, and a fader 223, and the button 221, the knob 222, and the fader 223 are all electrically connected to the first circuit board 21. The function keys are all inserted into the holes on the front shell 11 and exposed outside the housing 10 for users to operate, such as pressing, rotating, pushing and pulling.

[0035] For the convenience of understanding, each function key will be briefly described in this embodiment.

[0036] In this embodiment, the number of the knobs 222 is 3, the number of the faders 223 is two, and the number of the buttons 221 is 13. Among them, 9 buttons 221 are arranged in a nine-square grid, and the remaining 4 buttons 221 are respectively arranged in pairs at both ends of the two faders 223.

[0037] The functions of the two faders 223 are respectively used to control the volume of the microphone or accompaniment connected to the sound card 100. For example, one controls the volume of the XLR microphone, and the other controls the accompaniment audio volume of Bluetooth input, 3.5mm input, and USB-C downstream.

[0038] One of the knobs 222 is used to control the Gain microphone gain, such as controlling the gain of the XLR microphone; one knob 222 controls the Reverb, specifically, for example, controlling the strength of the reverb effect, and turning it to the leftmost side to turn it off; one knob 222 controls the Headphones, specifically, for example, controlling the volume output of the "headphone" and "earphone" interfaces through the knob 222.

[0039] The buttons 221 located at both ends of the fader 223 are respectively used to control functions such as microphone mute, accompaniment mute, microphone power switch, and turning on and off of the Bluetooth accompaniment connection function.

[0040] The buttons 221 located in the nine-square grid are respectively used for functions such as the original sound cancellation switch (ducking), the monitoring switch (internal anti-switch), the voice change mode, the noise reduction function, the dazzling light mode (the light emitting mode of the first light emitting unit), and 4 custom function buttons 221, which can customize functions such as light brightness, recording, and clearing recordings.

[0041] Continue to refer to Figure 3 and Figure 4, the bottom case 12 includes a bottom plate 121 and side plates. The side plates are arranged along the perimeter of the bottom plate 121, and the side plates are connected to the front case 11. The side plates form the four sides of the housing 10. The side plates of these four sides are respectively defined as a first side plate 122, a second side plate 123, a third side plate 124, and a fourth side plate 125. Among them, the first side plate 122 and the fourth side plate 125 are arranged opposite to each other and are located on the front and rear sides of the housing 10. The second side plate 123 and the third side plate 124 are arranged opposite to each other and are located on the left and right sides of the housing 10. Among them, the height of the fourth side plate 125 is higher than that of the first side plate 122, so that the sound card 100 presents a shape with a lower front and a higher rear.

[0042] Specifically, the front case 11 and the bottom case 12 are connected by screws. That is, studs 114 with internal threads are provided on the front case 11 and the bottom case 12, and the two are connected by screwing. In order to improve the assembly efficiency of the two and ensure the correct installation position, first snaps 113 and second snaps 126 are respectively provided at corresponding positions on the front case 11 and the bottom case 12. The first snap 113 and the second snap 126 are snapped together to achieve the smooth snapping of the front case 11 and the bottom case 12, and then screwing is used. In this embodiment, the first snap 113 is a slot, and the second snap 126 is a block. In other embodiments, the first snap 113 can also be a block, and the second snap 126 can also be a slot. This application does not make any restrictions. In order to facilitate the block to slide into the slot, a guiding groove is also provided on the first snap 113 to guide the block to slide into the slot.

[0043] Please refer to Figure 5 , in this embodiment, the first circuit board 21 and the second circuit board 26 are stacked. Specifically, the second circuit board 26 is arranged below the first circuit board 21, and the second circuit board 26 is arranged parallel to the first circuit board 21. Such an arrangement can better reduce the product thickness, rationally utilize the internal space of the housing 10, thereby reducing the product volume and further reducing the product production cost.

[0044] To improve the assembly efficiency of the sound card, the first circuit board 21 is connected to the front shell 11, and specifically, a screw is used to achieve a firm connection; it can be understood that other methods such as snap connections can also be used to achieve the connection between the two. In addition, the first circuit board 21 is provided with a through hole for the stud 114 to pass through, so as to further limit the movement of the first circuit board 21 and ensure a firm installation. The second circuit board 26 is disposed between the first circuit board 21 and the bottom shell 12. To improve the assembly efficiency, the second circuit board 26 is connected to the bottom shell 12, specifically, a screw is used to achieve a firm connection; of course, other methods such as snap connections can also be used to achieve the connection between the two. It can be understood that the connection between the first circuit board 21 and the front shell 11 and the connection between the second circuit board 26 and the bottom shell 12 can enable the two parts to be assembled separately and then assembled through the connection between the front shell 11 and the bottom shell 12, thereby improving the assembly efficiency. Separating the front shell 11 and the bottom shell 12 facilitates the production and assembly of the housing 10; the connection between the first circuit board 21 and the front shell 11 can facilitate the assembly of the first circuit board 21 during the production process, improve the assembly efficiency, and thus reduce the production cost of the product; the connection between the second circuit board 26 and the bottom shell 12 facilitates the assembly of the second circuit board 26 and improves the assembly efficiency.

[0045] To further ensure the installation stability of the first circuit board 21, a limiting plate 13 is further provided on the bottom shell 12. A limiting groove 211 is correspondingly provided at the edge portion of the first circuit board 21, and at least a part of the limiting plate 13 extends into the limiting groove 211, so as to ensure the correct installation of the first circuit board 21 and prevent damage to other components caused by its movement after installation.

[0046] Continue to refer to Figure 3 and Figure 4 , to ensure the installation stability of the second circuit board 26, a limiting notch 261 is provided on the second circuit board 26, and the limiting plate 13 is disposed in the limiting notch 261. That is, a limiting notch 261 is provided at the edge portion on one side of the second circuit board 26, and it cooperates with a part of the limiting groove 211 on the first circuit board 21 and the limiting plate 13 to achieve limiting, so as to ensure the installation stability of the two circuit boards. Providing the limiting notch 261 on the second circuit board 26 can ensure the correct installation position of the second circuit board 26 and effectively limit its installation position, and can also prevent damage to other components caused by the shaking or movement of the second circuit board 26 in the housing 10.

[0047] In this embodiment, the size of the first circuit board 21 is slightly smaller than the vertical projection area of the sound card 100 on the horizontal plane, so that the first circuit board 21 can be exactly installed in the accommodation cavity 10a. To control costs, the area of the second circuit board 26 is smaller than that of the first circuit board 21. Specifically, both the length and width of the second circuit board 26 are smaller than those of the first circuit board 21. The second circuit board 26 with a smaller size can further reduce the production cost of the product.

[0048] To further reduce costs and ensure the stability of the connection between the second circuit board 26 and the port component, the port component is arranged on the side plate. Specifically, the port component is set on the fourth side plate 125. Since the second circuit board 26 is arranged between the first circuit board 21 and the bottom plate 121, specifically at approximately the middle position of the fourth side plate 125, the electrical connection distance between the port component and the second circuit board 26 is the shortest. In this embodiment, the port component is directly set on the second circuit board 26. And the port component being arranged on the side plate can make the connection between the port component and the second circuit board 26 more convenient and reduce the electrical connection cost.

[0049] Please refer to Figure 2 , in this embodiment, the port component includes a microphone interface 51, a headset interface 52, an accompaniment interface 53, a headphone interface 54, a line output interface 55, a data interface 56, and a power interface 57. The port components are all passed through the openings of the fourth side plate 125 and are arranged in a straight line at approximately the middle position of the fourth side plate 125.

[0050] Among them, the microphone interface 51 is a XLR or 6.35mm universal microphone interface, supporting dynamic microphone input with an XLR connector or a 6.35mm plug.

[0051] The headset interface 52 supports the input of mobile phones and gaming headsets with a 3.5mm TRRS plug; it has an insertion detection function, automatically shielding the XLR signal input when a four-section headset is inserted; if a three-section headphone or other non-headset device is inserted, the XLR / 6.35mm microphone interface 51 is still used as the audio input. Setting the headset interface 52 can not only enable users to use headsets, but also quickly and automatically detect the type of inserted headset and automatically adjust the input of audio signals, enhancing the user experience.

[0052] The accompaniment interface 53 is used to connect the audio signals input from external audio devices such as mobile phones, tablets, decoders, players, etc.; it supports audio playback devices such as mobile phones and MP3 players to transmit audio signals into the sound card 100 through an AUX audio cable.

[0053] The headphone jack 54 supports mobile phones / gaming headsets (TRRS plugs) and ordinary headphones (TRS plugs). After connecting to the sound card 100, it can monitor the sounds of various audio channels on the sound card 100.

[0054] The linear output interface 55 is a 3.5mm unidirectional stereo output interface, which is used to connect speakers and other audio devices.

[0055] The data interface 56 is a USB-C data interface 56, which is used for the up and down transmission of audio signals; the data interface 56 can also be used as a power supply interface for the sound card 100.

[0056] The power interface 57 is a DC power interface 57, which supplies power to the sound card 100.

[0057] In this embodiment, when the headset interface 52 and the headphone jack 54 are used simultaneously, sound outputs are available for both, improving the applicable range of the sound card 100 product and enhancing the user experience.

[0058] In this embodiment, the control component further includes a power switch 28. The power switch 28 passes through the opening in the fourth side plate 125 and is electrically connected to the first circuit board 21, and is used to control the power on and off of the sound card 100.

[0059] Please refer to Figure 3 and Figure 4 , in order to enhance the functions and control effects of the sound card 100, in the embodiment of the present application, the control component further includes a second circuit board 26. The port component and the power switch 28 are both electrically connected to the second circuit board 26, and the second circuit board 26 is electrically connected to the first circuit board 21. Setting the second circuit board 26 can better control the port component, thereby providing better sound effects. Specifically, the second circuit board 26 is disposed between the first circuit board 21 and the bottom plate 121 and is arranged in parallel with the first circuit board 21.

[0060] In order to further enhance the sound effects of the microphone connected to the sound card 100, the control component is also provided with a third circuit board 27 that is electrically connected to the microphone jack 51. The third circuit board 27 is disposed between the second circuit board 26 and the bottom plate 121, and the third circuit board 27 is electrically connected to the second circuit board 26. Separately setting the third circuit board 27 for the microphone jack 51 can enable the audio signal input from the microphone to the sound card 100 to be better processed by the third circuit board 27, thereby outputting better sound effects and enhancing the user experience.

[0061] Continue to refer to Figure 5, in this embodiment, the first circuit board 21, the second circuit board 26 and the third circuit board 27 are stacked, and the second circuit board 26 is disposed between the first circuit board 21 and the third circuit board 27; an installation opening 262 is provided on the second circuit board 26, and the third circuit board 27 is disposed corresponding to the installation opening 262. Specifically, in this embodiment, an installation opening 212 is also provided at the position of the first circuit board 21 corresponding to the installation opening 262 of the second circuit board 26. In this way, the microphone interface 51 can be smoothly installed at the positions of the installation opening 262 and the installation opening 212, and is electrically connected to the third circuit board 27, and can be arranged in a straight line with other interfaces on the fourth side plate 125. The stacked arrangement of the three circuit boards can reduce the thickness and volume of the product, thereby reducing the production cost of the product; and the third circuit board 27 is disposed corresponding to the installation opening 262, which facilitates the microphone interface 51 to be directly electrically connected to the third circuit board 27, and can also ensure that the design positions of the microphone interface 51 and other interfaces are consistent on the side plate.

[0062] , in this embodiment, the control assembly further includes a battery 24 electrically connected to the first circuit board 21, and the battery 24 is disposed below the first circuit board 21 and on one side of the second circuit board 26. Such an arrangement can make more reasonable use of the space inside the housing 10 and further reduce the volume of the product. A reverse charging module (not shown in the figure) is provided on the first circuit board 21 for charging an external device. The provision of the battery 24 can provide electrical energy for the sound card 100, facilitating the user to carry and use; the design of the reverse charging module enables the sound card 100 to charge other external devices such as mobile phones and tablets, expanding the application scenarios and functions of the sound card 100.

[0063] In order to better indicate the power level of the battery 24, in this embodiment, the control component further includes a first indicator light 23 electrically connected to the first circuit board 21. The first indicator light 23 is disposed through the front shell 11 and is used to display the power level of the battery 24, so as to facilitate the user to confirm the power level of the battery 24, so as to charge in advance or carry an external power supply or confirm whether to charge an external device. In the sound card 100 provided in this embodiment, the number of the first indicator lights 23 is multiple. Taking 5 as an example: when the power level of the battery 24 is greater than 75%, 4 first indicator lights 23 are lit; when the power level of the battery 24 is less than 75% and greater than or equal to 50%, 3 first indicator lights 23 are lit; when the power level of the battery 24 is less than 50% and greater than 25%, 2 first indicator lights 23 are lit; when the power level of the battery 24 is less than or equal to 25%, 1 first indicator light 23 is lit. In other embodiments, other indication forms may also be adopted. For example, multiple first indicator lights 23 are divided into 4 segments, and the current power level of the battery 24 is displayed in a columnar form, respectively representing the power levels of 20%, 40%, 60%, and 80% of the battery 24. The specific indication form is not specifically limited in this application.

[0064] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification. The above-described embodiments only represent several implementation manners of the present application. Their descriptions are relatively specific and detailed, but they should not be construed as limitations on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A sound card, used to connect external devices to realize the mutual conversion of sound waves / digital signals, characterized in that: include: The housing has a receiving cavity; A port assembly, provided on the housing, for connecting the external device; A control component includes a first circuit board, a function key and a second circuit board, wherein the function key is disposed in the shell and exposed outside the shell, the first circuit board and the second circuit board are both disposed in the accommodating cavity, and the second circuit board and the function key are both electrically connected to the first circuit board; wherein the second circuit board is electrically connected to the port component.

2. The sound card according to claim 1, characterized in that: The first circuit board and the second circuit board are stacked.

3. The sound card according to claim 1, characterized in that: The shell includes a front shell and a bottom shell, wherein the front shell and the bottom shell are connected to form the accommodating cavity; the first circuit board is connected to the front shell, and the second circuit board is arranged between the first circuit board and the bottom shell.

4. The sound card according to claim 3, characterized in that: A limiting plate is provided on one side of the shell facing the accommodating cavity, a limiting groove is provided on the first circuit board, and the limiting plate is arranged in the limiting groove.

5. The sound card according to claim 4, characterized in that: The second circuit board is provided with a limiting notch, and the limiting plate is arranged in the limiting notch.

6. The sound card according to claim 3, characterized in that: The second circuit board is connected to the bottom shell, and the area of ​​the second circuit board is smaller than that of the first circuit board; the housing also includes a side panel connecting the bottom shell and the surface shell, and the port assembly is arranged on the side panel.

7. The sound card according to claim 1, characterized in that: The port component includes a microphone interface, which is used for audio input; the control component also includes a third circuit board, which is electrically connected to the microphone interface.

8. The sound card according to claim 7, characterized in that: The first circuit board, the second circuit board and the third circuit board are stacked, the second circuit board is arranged between the first circuit board and the third circuit board, and the second circuit board is arranged parallel to the first circuit board; the second circuit board is provided with a mounting opening, and the third circuit board is arranged corresponding to the mounting opening.

9. The sound card according to claim 7, characterized in that: The port component includes a headset interface, and the headset interface has an insertion detection function.

10. The sound card according to claim 1, characterized in that: The control component also includes a battery electrically connected to the first circuit board, and the battery is arranged below the first circuit board and located on one side of the second circuit board; a reverse charging module is provided on the first circuit board for charging an external device.

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