CN207835731U

CN207835731U - A kind of earphone cradle

Info

Publication number: CN207835731U
Application number: CN201820075445.XU
Authority: CN
Inventors: 王建波; 曹新放
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2018-01-16
Filing date: 2018-01-16
Publication date: 2018-09-07
Anticipated expiration: 2028-01-16

Abstract

The utility model embodiment discloses a kind of earphone cradle, including：Equipment interface for being connect with external equipment, the earphone interface for being connect with earphone, manual switch unit, charging circuit and audio transmission circuit；Wherein, the equipment interface is connect with the charging circuit and the audio transmission circuit respectively；The earphone interface is connect with one end of the manual switch unit；The other end of the manual switch unit is connect with the charging circuit and the audio transmission circuit respectively.The technical solution that the utility model embodiment provides, earphone cradle can realize the conversion of charge function and audio frequency transmission function, when avoiding user using earphone charging or audio transmission, repeat earphone and detached with cradle and the troublesome operations such as connect.

Description

Earphone charging seat

Technical Field

The utility model belongs to the technical field of the charger, specifically speaking relates to an earphone charging seat.

Background

At present, earphones become an indispensable accessory for people to use intelligent terminals, and sound can be acquired through the earphones when people watch videos or listen to music. With the continuous development of the technology, the types of earphones are more and more, and besides common earphones, noise reduction earphones are also available. The noise reduction earphone can accurately block noise, automatically adjust along with the change of sound, calibrate the audio frequency in real time and optimize the sound output. The noise reduction earphone is internally provided with a rechargeable battery, and a user needs to charge the noise reduction earphone by using a charging seat when using the noise reduction earphone.

The power transmission line and the audio transmission line in the output port of the existing charging seat are the same line. Therefore, after the noise reduction earphone is inserted into the charging interface of the charging base, the audio transmission line of the noise reduction earphone is occupied, so that the noise reduction earphone can only be charged and cannot be used for sound transmission. If the user wants to listen to music or talk with the headset, the headset must be separated from the charging stand. For example, a user charges a noise reduction earphone through a USB port of a notebook, and when the user needs to listen to music at the same time, the user cannot use another earphone, or unplug the earphone from a charging stand without charging.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present invention provides an earphone charging seat, which can realize the conversion between the charging function and the audio transmission function.

For solving the technical problem among the prior art, the embodiment of the utility model provides an earphone charging seat, include: the earphone comprises an equipment interface used for being connected with external equipment, an earphone interface used for being connected with an earphone, a manual switch unit, a charging circuit and an audio transmission circuit; wherein,

the equipment interface is respectively connected with the charging circuit and the audio transmission circuit;

the earphone interface is connected with one end of the manual switch unit;

the other end of the manual switch unit is respectively connected with the charging circuit and the audio transmission circuit.

Optionally, the manual switch unit includes an analog switch chip and a manual switch;

the common end of the analog switch chip is connected with the earphone interface, and two connecting ends are respectively connected with the charging circuit and the audio transmission circuit;

the manual switch is arranged on the shell of the earphone charging seat and is connected with the control end of the analog switch chip.

Optionally, the manual switch comprises a segmented push button switch, a push button switch or a knob switch.

Optionally, the manual switch unit is a single-pole double-throw switch;

the moving end of the single-pole double-throw switch is connected with the earphone interface, and the two fixed ends of the single-pole double-throw switch are respectively connected with the charging circuit and the audio transmission circuit;

the moving end of the single-pole double-throw switch is provided with a manual control part, and the manual control part is exposed outside through the shell of the earphone charging seat.

Optionally, the charging circuit includes a power manager and a current limiting resistor;

the power supply manager is respectively connected with the equipment interface and the manual switch unit;

one end of the current-limiting resistor is connected with the power supply manager, and the other end of the current-limiting resistor is connected with the ground wire.

Optionally, the number of the current limiting resistors is at least two, and the resistance value range of the current limiting resistors is 1-15K.

Optionally, the audio transmission circuit includes a processor and an audio decoder connected to the processor;

the processor is connected with the equipment interface;

the audio decoder is connected with the manual switch unit.

Optionally, a prompt component is further included;

the prompting component is arranged between the equipment interface and the charging circuit or between the charging circuit and the manual switch unit.

Optionally, the prompting component comprises one or a combination of a speaker, an indicator light, a vibrator, and a display.

In addition, optionally, the earphone interface includes a first terminal for connecting an earphone microphone line, and a second terminal and a third terminal for connecting an earphone left sound line and an earphone right sound line, respectively;

the first terminal is connected with the manual switch unit;

the second terminal and the third terminal are respectively connected with the audio transmission circuit.

In the technical scheme provided by the embodiment of the utility model, through setting up the manual switch unit, the user can manually control the connection relation of the manual switch unit, realize the access intercommunication between earphone interface and charging circuit or audio transmission circuit, thus realize the conversion of charging seat charging function and audio transmission function, the user need not to pull out the earphone from the charging seat, also can use the earphone to listen or talk; after listening or talking is finished, the charging seat can be manually switched back to the charging mode to continuously charge the earphone, so that the earphone is convenient for users to use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain embodiments of the invention and are not intended to limit the embodiments of the invention unduly.

In the drawings:

fig. 1 is an internal circuit diagram of an earphone charging seat according to an embodiment of the present invention;

fig. 2 is an external schematic view of the earphone charging seat according to the embodiment of the present invention.

Description of the reference numerals

10: an equipment interface; 20: an earphone interface; 21: a first terminal; 22: a second terminal; 23: a third terminal; 30: a manual switch unit; 31: a manual switch; 40: a charging circuit; 41: a power manager; 42: a current limiting resistor; 43: a prompt component; 50: an audio transmission circuit; 51: a processor; 52: an audio decoder.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope protected by the embodiments of the present invention.

In some of the flows described in the description, claims, and above-described figures of embodiments of the present invention, operations are included in a particular order, and may be performed out of order or in parallel as they appear herein. The sequence numbers of the operations, e.g., 101, 102, etc., are used merely to distinguish between the various operations, and do not represent any order of execution per se. Additionally, the flows may include more or fewer operations, and the operations may be performed sequentially or in parallel. It should be noted that, the descriptions of "first", "second", etc. in this document are used for distinguishing different messages, devices, modules, etc., and do not represent a sequential order, nor limit the types of "first" and "second" to be different.

The inventor is realizing the utility model discloses an in-process discovery falls the earphone of making an uproar and inserts the charging base's that uses at present interface back that charges, falls the earphone of making an uproar and can only charge the operation, if the user wants to listen music or conversation with this earphone, must separate earphone and charging seat. The reason for this is that the power transmission line and the audio transmission line in the output port of the charging base are the same line, and after the noise reduction earphone is inserted into the charging interface of the charging base, the audio transmission channel is occupied, and audio transmission cannot be realized. If the user wants to listen to music or talk with the earphone, the user needs to separate the earphone from the charging seat, and then connects the earphone with the charging seat when the user charges again, so that the operation is very complicated.

Therefore, for solving the defect in the prior art, the embodiment of the utility model provides an earphone charging seat can realize the conversion of charging function and audio transmission function.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings and embodiments, so that how to implement the technical solution to solve the technical problem and achieve the technical effect can be fully understood and implemented, and the structure of the embodiments of the present invention will be further described with reference to the following drawings.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the embodiments of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of describing the embodiments of the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and therefore the terms describing the positional relationships in the drawings are only used for illustrative purposes, and should not be construed as limiting the embodiments of the present invention, and it will be understood that the specific meanings of the terms can be understood by those skilled in the art according to specific situations.

Fig. 1 is an internal circuit diagram of an earphone charging seat according to an embodiment of the present invention, as shown in fig. 1.

An embodiment of the utility model provides an earphone charging seat, include: a device interface 10 for connecting with an external device, a headphone interface 20 for connecting with a headphone, a manual switch unit 30, a charging circuit 40, and an audio transmission circuit 50.

The device interface 10 is connected to the charging circuit 40 and the audio transmission circuit 50, respectively. The earphone interface 20 is connected to one end of the manual switch unit 30. The other end of the manual switch unit 30 is connected to the charging circuit 40 and the audio transmission circuit 50, respectively.

Specifically, the device interface 10 is used for connecting with an external device, the device interface 10 includes but is not limited to a USB interface and the like, and the external device includes but is not limited to a computer and the like. The headphone interface 20 is for connecting with a headphone, and the headphone interface 20 includes, but is not limited to, a 3.5mm headphone interface. The initial state of the headset charging stand is that the manual switch unit 30 is communicated with the path between the headset interface 20 and the charging circuit 40. For example, when the external device is a computer, the user can plug the earphone charging seat into the computer through the device interface 10, and the earphone is plugged into the charging seat through the earphone interface 20, so that the computer can provide charging power for the earphone. When the user needs to listen to music or talk, the user only needs to switch the receiving switch 30, so that the manual switch unit 30 disconnects the path between the earphone interface 20 and the charging circuit 40, and connects the path between the earphone interface 20 and the audio transmission circuit 50, at this time, the earphone charging seat is not charged, the earphone receives the audio signal transmitted by the device interface 10 through the earphone interface 20, and the user can listen to music or talk through the earphone.

According to the technical scheme provided by the embodiment of the utility model, through the manual switch unit 30, the user can manually control the connection relation of the manual switch unit so as to realize the communication between the earphone interface 20 and the charging circuit 40 or the audio transmission circuit 50, thereby realizing the conversion between the charging function and the audio transmission function of the charging seat, and the user can listen to or talk with the earphone without pulling the earphone out of the charging seat; after listening or talking is finished, the charging seat can be manually switched back to the charging mode to continuously charge the earphone, so that the earphone is convenient for users to use. The operation is simple and convenient, and the user can complete the function conversion only by operating the manual switch unit 30.

The following provides a further detailed description of the earphone charging seat provided by the embodiment of the present invention.

In the embodiment of the present invention, the implementation manner of the manual switch unit 30 includes multiple, and one implementation manner is, see fig. 2, in the embodiment of the present invention, the manual switch unit 30 includes an analog switch chip (not shown in the figure) and a manual switch 31. Specifically, the common terminal of the analog switch chip is connected to the earphone interface 20, and the two connection terminals are respectively connected to the charging circuit 40 and the audio transmission circuit 50. The manual switch 31 is arranged on the shell of the earphone charging seat and is connected with the control end of the analog switch chip. The common terminal of the analog switch chip can be controlled to be connected to one of the two connection terminals by the manual switch 31, so that the earphone interface 20 is connected to the charging circuit 40 or the audio transmission circuit 50. Wherein, the manual switch 31 includes a sectional push button switch, a button switch or a knob switch.

Taking the manual switch 31 as a segment push button switch as an example, the manual switch 31 is in two segments, the common terminal of the first segment corresponding to the control analog switch chip is communicated with the charging circuit 40, and the common terminal of the second segment corresponding to the control analog switch chip is communicated with the audio transmission circuit 50. When the user needs to charge the earphone, the manual switch 31 is pushed to the first section, the earphone charging seat is connected with the external device through the device interface 10, the earphone is connected with the earphone interface 20 of the earphone charging seat, and the earphone charging seat can charge the earphone.

When a user needs to listen to music or talk through the earphone, the manual switch 31 is pushed from the first section to the second section, the manual switch 31 controls the common end of the analog switch chip to be communicated with the audio transmission circuit 50, and the user can listen to music or talk through the earphone.

Another way of realizing the manual switch unit 30 is that the manual switch unit is a single pole double throw switch. Specifically, the moving end of the single-pole double-throw switch is connected to the earphone interface 20, and the two fixed ends are respectively connected to the charging circuit 40 and the audio transmission circuit 50. The moving end of the single-pole double-throw switch is provided with a manual control part which is exposed outside through the shell of the earphone charging seat.

For example, the single-pole double-throw switch is shown in fig. 1, wherein the manual control part of the single-pole double-throw switch can refer to the arrangement mode of the manual control switch 31 in fig. 2. In fig. 1, the end 2 is a moving end, and the ends 1 and 3 are fixed ends. The initial state of the earphone charging seat is that the manual switch unit 30 is in a first gating working state, that is, in fig. 1, the 2 end and the 3 end of the manual switch unit 30 are communicated, that is, the communication between the earphone interface 20 and the charging circuit 40 is achieved, a user can plug the earphone charging seat into a computer, the earphone can receive the electric energy transmitted by the device interface 10 through the earphone interface 20, and the earphone charging seat can achieve the function of charging the earphone. When the user needs to listen to music or talk, the manual switch unit 30 is only required to be switched to the second gating operating state, that is, in fig. 1, the 2 terminal and the 1 terminal of the manual switch unit 30 are connected, that is, the earphone interface 20 is disconnected from the charging circuit 40 through the manual switch unit 30, and the connection between the earphone interface 20 and the audio transmission circuit 50 is connected, at this time, the earphone charging seat is not charged, the earphone receives the audio signal transmitted by the device interface 10 through the earphone interface 20, and the user can listen to music or talk through the earphone.

With continued reference to fig. 1, in the embodiment of the present invention, the charging circuit 40 includes a power manager 41 and a current limiting resistor 42. The power manager 41 is connected to the device interface 10 and the manual switch unit 30, respectively. The current limiting resistor 42 has one end connected to the power manager 41 and the other end connected to the ground.

The power manager 41 is configured to convert electric energy output by the external device into electric energy suitable for the headset, and specifically, after the manual switch unit 30 is connected to a circuit between the power manager 41 and the headset interface 20, the power manager 41 converts the electric energy of the external device transmitted from the device interface 10 into electric energy suitable for the headset, and transmits the electric energy to the headset through the headset interface 20 to charge the headset. If the earphone is charged through the earphone charging seat, the voltage output by the external equipment may be greater than or less than the voltage suitable for charging the earphone, if the voltage is greater than the voltage, the battery of the earphone is damaged, and if the voltage is less than the voltage, the charging cannot be completed. Meanwhile, the voltage output by the external device may fluctuate, resulting in unstable charging voltage and damage to the earphone battery. The voltage output by the external device can be adjusted to a voltage suitable for charging the battery of the earphone through the power manager 41, and meanwhile, the power manager 41 can also ensure that the voltage output to the battery of the earphone is in a stable state. The power manager 41 provides protection for the headset battery during a headset charging operation by using the headset to charge the seat.

The current limiting resistor 42 performs current limiting control for the power manager 41. The current limiting resistor 42 may be multiple, and the resistance value of the current limiting resistor 42 ranges from 1K to 15K. In the embodiment of the present invention, optionally, the current limiting resistor 42 is two, and the resistance value of one current limiting resistor is 1K, and the other is 10K.

After the passageway between intercommunication charging circuit 40 and earphone interface 20, in order to remind the user that the earphone charging seat is in the function of charging this moment, the embodiment of the utility model provides an still can add suggestion subassembly 43 in the earphone charging seat. The prompting component 43 is provided between the device interface 10 and the charging circuit 40, or between the charging circuit 40 and the manual switch unit 30. The prompting component 43 is used for prompting after the communication between the earphone interface 20 and the charging circuit 40. The prompting assembly 43 includes one or a combination of a speaker, an indicator light, a vibrator, and a display. For example, when the user switches the functions through the manual switch 31, after the communication between the earphone interface 20 and the charging circuit 40 is established, the speaker emits a limited number of drips, or the indicator light is usually on or blinks, or the vibrator vibrates for a limited number of times, or the display displays the charging and charging amount.

In the embodiment of the present invention, the audio transmission circuit 50 is realized in multiple ways, and one way that can be realized is that the audio transmission circuit 50 includes a processor 51 and an audio decoder 52 connected to the processor 51.

Specifically, the processor 51 is connected to the device interface 10. The audio decoder 52 is connected to the manual switch unit 30. When the earphone interface 20 is connected to the audio transmission circuit 50 through the manual switch unit 30, a digital audio signal is input to the processor 51 through the device interface 10, the processor 51 transmits the audio signal to the audio decoder 52, and after the digital audio signal is converted into an analog audio signal by the audio decoder 52, the analog audio signal is output through the earphone interface 20, for example, a user listens to a sound through an earphone; alternatively, the earphone interface 20 inputs an analog audio signal, the analog audio signal is converted into a digital audio signal by the audio decoder 52, after the conversion by the audio decoder 52 is completed, the digital audio signal is transmitted to the device interface 10 by the processor 51, the device interface 10 outputs the digital audio signal to an external device such as a computer, for example, a user makes a voice call through an earphone.

The audio transmission circuit 50 may also be provided with a prompt component 43 for prompting the user that the connection is successful after the headset charging cradle is connected to the external device. The cueing component 43 is provided between the device interface 10 and the processor 51 or the cueing component 43 is provided between the processor 51 and the audio decoder 52.

Another way of realizing the audio transmission circuit 50 is that the processor 51 may perform audio decoding, so that the audio decoder 52 may be omitted, and the processor 51 may be connected to the device interface 10, the headphone interface 20, and the manual switch unit 30, respectively.

In the embodiment of the present invention, the earphone interface 20 includes a first terminal 21 for connecting the earphone microphone line and a second terminal 22 and a third terminal 23 for respectively connecting the left sound ray and the right sound ray of the earphone. When the earphone is charged through the earphone charging seat, the charging circuit 40 may occupy all three lines or one of the three lines may be connected through the manual switch unit 30. For example, the earphone interface 20 may be connected with the manual switch unit 30 only through the first terminal 21. Specifically, the first terminal 21 is connected with the manual switch unit 30 through an electrical connector. When the path between the first terminal 21 and the charging circuit 40 is connected by the manual switch unit 30, the user cannot talk while the earphone is being charged. The current generated by the charging circuit 40 can be effectively prevented from influencing the user call, for example, the electromagnetic noise can be prevented from influencing when the user calls.

In order to enable the user to listen to sound while charging the headset, the second terminal 22 and the third terminal 23 of the headset interface 20 are respectively connected to the audio transmission circuit 50 through corresponding electrical connectors. The charging circuit 40 thus does not occupy the second terminal 22 and the third terminal 23, and the earphone can listen to sound while charging.

The following description will describe the connection relationship between each component in the earphone charging seat provided by the embodiment of the present invention by taking the manual switch unit 30 as a single-pole double-throw switch and arranging the prompt component 43 on the processor 51 and the power manager 41 as an example.

Referring to fig. 1, the device interface 10 is a USB interface, and includes a power pin 1 (VBUS in the figure), a negative differential signal pin 2 (D-), a positive differential signal pin 3 (D +) in the figure, and a ground pin 4 (GND in the figure).

The processor 51 is model MSP430G2553, and includes a digital power supply voltage pin 1 (DVCC), a digital power supply voltage pin 20 (DVSS), a TEST pin 17 (TEST), and input/output pins 15, 14, and 11 (P1.7, P1.6, and P2.3).

The audio decoder 52 is model CS42L42, and includes input/output pins 1 and 2, a left audio line pin L, a right audio line pin R, and a microphone pin MIC.

The manual switch unit 30 includes a movable terminal pin 2 and fixed terminal pins 1 and 3.

The power manager 41 is model BQ2404, and includes input pin 1 (IN the figure), output pin 10 (OUT IN the figure), current limiting pins 2, 7 and 4 (ISET 1, SET2 and PRTM IN the figure), hint pin 8 (CHG IN the figure), and power ground pin 3 (VSS IN the figure).

The earphone interface 20 includes a ground pin 6, a microphone pin 5 (first terminal 21), a left sound ray pin 4 (second terminal 22), a right sound ray pin 2 (third terminal 23), and a detection terminal 1.

Pins 1, 2, and 3 of device interface 10 are connected to pins 1, 2, and 3 of processor 40, respectively, and pin 4 of device interface 10 is connected to ground.

Pin 20 of processor 51 is connected to ground, pins 15 and 14 are connected to pins 1 and 2 of audio decoder 52, pin 11 is connected to the input of prompt component 43 connected to processor 51, the output of prompt component 43 is connected to ground, and pin 17 is connected to pin 1 of earphone interface 20.

Pin L, R of the audio decoder 52 is connected to pins 4 and 2 of the headphone interface 20, respectively, and pin MIC is connected to pin 1 of the manual switch unit 30.

Pin 2 of the manual switch unit 30 is connected to pin 5 of the headphone interface 20, and pin 3 is connected to pin 10 of the power manager 41.

Pin 1 of the power manager 41 is connected to pin 1 of the device interface 10, pins 2 and 4 are connected to the ground through the current limiting resistor 42, pins 3 and 7 are connected to the ground, pin 10 is connected to the input pin of the prompt component 43 connected to the power manager 41, and pin 8 is connected to the output pin of the prompt component 43.

Pin 6 of the headset interface 20 is connected to ground.

To sum up, in the technical solution provided by the embodiment of the present invention, by setting the manual switch unit, the user can manually control the connection relationship of the manual switch unit to realize the communication between the earphone interface and the charging circuit or the audio transmission circuit, thereby realizing the conversion between the charging function and the audio transmission function of the charging seat, further enabling the user to separately perform the charging and the audio transmission by using the earphone, and the user can listen or talk by using the earphone without pulling the earphone out of the charging seat; after listening or talking is finished, the charging seat can be manually switched back to the charging mode to continuously charge the earphone, so that the earphone is convenient for users to use. Meanwhile, the noise interference caused by the fact that current sound generated by the charging circuit is connected into the audio transmission circuit in series can be effectively avoided. Additionally, the embodiment of the utility model provides an earphone charging seat, simple structure, convenient to use has improved user's whole and has used experience.

It should be noted that, although the detailed description of the embodiments of the present invention is provided with reference to the drawings, the present invention should not be construed as limiting the scope of the embodiments of the present invention. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.

The examples of the embodiment of the present invention are intended to concisely illustrate the technical features of the embodiments of the present invention, so that a person skilled in the art can visually understand the technical features of the embodiments of the present invention, and do not act as an improper limitation of the embodiments of the present invention.

The above-described apparatus embodiments are merely illustrative, wherein the units described as separate components may or may not be physically separate. One of ordinary skill in the art can understand and implement it without inventive effort.

While the foregoing description shows and describes several preferred embodiments of the present invention, it is to be understood, as noted above, that the embodiments are not limited to the forms disclosed herein, but are not to be considered as exclusive of other embodiments, and are capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. Modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the embodiments of the invention, which should be limited only by the claims appended hereto.

Claims

1. An earphone charging stand, comprising: the earphone comprises an equipment interface used for being connected with external equipment, an earphone interface used for being connected with an earphone, a manual switch unit, a charging circuit and an audio transmission circuit; wherein,

the earphone interface is connected with one end of the manual switch unit;

2. The headset charging stand of claim 1, wherein the manual switch unit comprises an analog switch chip and a manual switch;

3. The headset charging stand of claim 2 wherein the manual switch comprises a push button switch, or a knob switch.

4. The headset charging stand of claim 1, wherein the manual switch unit is a single pole double throw switch;

5. The headset charging dock of any one of claims 1 to 4, wherein the charging circuit comprises a power manager and a current limiting resistor;

6. The headset charging stand as defined in claim 5, wherein the number of the current limiting resistors is at least two, and the resistance value of the current limiting resistor is in the range of 1-15K.

7. The headset charging dock of any one of claims 1 to 4, wherein the audio transmission circuit comprises a processor and an audio decoder connected to the processor;

the processor is connected with the equipment interface;

the audio decoder is connected with the manual switch unit.

8. The headset charging dock of any one of claims 1 to 4, further comprising a reminder component;

9. The headset charging dock of claim 8, wherein the reminder assembly comprises one or a combination of a speaker, an indicator light, a vibrator, and a display.

10. The headset charging stand of any one of claims 1 to 4, wherein the headset interface comprises a first terminal for connecting a headset microphone line and a second terminal and a third terminal for connecting a headset left sound line and a headset right sound line, respectively;

the first terminal is connected with the manual switch unit;