Bluetooth adapter-based interactive earphone box, bluetooth adapter earphone box system and bluetooth earphone

Abstract

This utility model relates to an interactive headphone case based on a Bluetooth adapter, a Bluetooth adapter headphone case system, and Bluetooth headphones. The headphone case includes: an external control unit for receiving control signals; a main control unit, communicatively connected to the external control unit, for outputting a working mode signal based on the relative position of the Bluetooth adapter and the headphone case; a first antenna for transmitting control signals to the Bluetooth headphones based on the working mode signal; and a storage compartment formed inside the headphone case for accommodating a detachable Bluetooth adapter, with a USB interface at the bottom of the storage compartment. When the Bluetooth adapter is not inserted into the headphone case, the main control unit transmits control signals to the Bluetooth headphones through the first antenna; when the Bluetooth adapter is inserted into the storage compartment and connected to the USB interface, the main control unit interacts with the Bluetooth adapter through the USB interface. This utility model enables Bluetooth headphones to connect to external mobile devices via a Bluetooth adapter in different application scenarios.

Description

Technical Field

[0001] This utility model relates to the field of communications, and in particular to an interactive headphone box based on a Bluetooth adapter, a Bluetooth adapter headphone box system, and Bluetooth headphones. Background Technology

[0002] With the development of mobile devices, Bluetooth headsets have gained an increasingly wider market share. However, in the current technology, external mobile devices are still more common, such as desktop computers and dedicated devices.

[0003] To enable Bluetooth communication with external mobile devices, Bluetooth headsets include a compatible Bluetooth adapter in the headset case.

[0004] In existing Bluetooth headset cases, the Bluetooth adapter is usually separated from the Bluetooth headset case. When in use, the Bluetooth adapter is removed from the Bluetooth headset case and then directly connected to an external mobile device to achieve communication between the Bluetooth headset, the Bluetooth adapter, and the external mobile device.

[0005] It is evident that existing Bluetooth adapters in headphone cases are usually just for storage and do not have a communication connection with the headphone case. This limits the application scenarios of Bluetooth headphones and makes it difficult to meet user needs. Utility Model Content

[0006] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, the present invention provides an interactive headphone case based on a Bluetooth adapter, a Bluetooth adapter headphone case system, and Bluetooth headphones.

[0007] In a first aspect, an interactive headphone case based on a Bluetooth adapter is provided, the headphone case comprising:

[0008] An external control unit is used to receive control signals;

[0009] The main control unit is communicatively connected to the external control unit and is used to output a working mode signal according to the relative position of the Bluetooth adapter and the earphone box;

[0010] The first antenna is communicatively connected to the main control unit and is used to transmit the control signal to the Bluetooth headset according to the working mode signal.

[0011] A storage compartment, formed inside the earphone case, is used to accommodate a detachable Bluetooth adapter, and a USB port is provided at the bottom of the storage compartment;

[0012] When the Bluetooth adapter is not inserted into the earphone case, the main control unit transmits the control signal to the Bluetooth earphone through the first antenna;

[0013] When the Bluetooth adapter is inserted into the storage compartment and connected to the USB interface, the main control unit interacts with the Bluetooth adapter via the USB interface.

[0014] Optionally, at least one Hall sensor is also included, located at the bottom of the storage compartment and connected to the main control unit, for detecting the insertion status of the Bluetooth adapter.

[0015] Optionally, the main control unit includes:

[0016] The control subunit is configured to output a high level when the Bluetooth adapter is detected to be inserted into the headphone case;

[0017] The control subunit is also configured to output a low level when it detects that the Bluetooth adapter is not inserted into the headphone case.

[0018] Optionally, the control subunit includes:

[0019] The first switch is turned off when the Bluetooth adapter is inserted into the headphone case and turned on when the Bluetooth adapter is not inserted into the headphone case. The first switch is turned on or off according to the insertion and removal status of the Bluetooth adapter. The control subunit is used to output high / low level signals to the main control unit to indicate the working mode.

[0020] The positive terminal of the first capacitor is connected to the power supply.

[0021] The first resistor has its first end connected to the negative terminal of the first capacitor and its second end connected to the first terminal of the first switch.

[0022] The second resistor has its first end connected to the second end of the first switch;

[0023] The first transistor has its base connected to the second terminal of the second resistor, its emitter grounded, and its collector connected to the first output terminal.

[0024] The third resistor has its first end connected to the negative terminal of the first capacitor and its second end connected to the collector of the first transistor.

[0025] Optionally, the main control unit further includes:

[0026] An antenna switching subunit, connected to the control subunit, is used to disable the first antenna when the control subunit outputs a high level.

[0027] Optionally, the main control unit further includes:

[0028] The communication subunit has a first end connected to the control signal port of the main control unit and a second end connected to the control signal port of the Bluetooth adapter. It is used to enable the main control unit to transmit the control signal to the Bluetooth headset through the Bluetooth adapter when the Bluetooth adapter is detected to be inserted into the headphone case.

[0029] The communication subunit is also used to disconnect the communication link between the main control unit control signal port and the Bluetooth adapter control signal port when it is detected that the Bluetooth adapter is not inserted into the earphone case.

[0030] Optionally, the communication subunit includes a detection contact for shorting to ground when the Bluetooth adapter is inserted into the headphone case;

[0031] The detection contact is also used to suspend the Bluetooth adapter when it is not inserted into the headphone case.

[0032] Optionally, the communication subunit includes:

[0033] The fourth resistor has its first terminal connected to the first interface;

[0034] The positive terminal of the first diode is connected to the second terminal of the fourth resistor;

[0035] The fifth resistor has its first end connected to the power supply and its second end connected to the negative terminal of the first diode.

[0036] The collector of the second transistor is connected to the negative terminal of the first diode, and the collector is also connected to the second interface; the emitter is grounded.

[0037] The sixth resistor has its first end connected to the base of the second transistor and its second end connected to the detection contact.

[0038] Wherein, the first interface is the control signal port of the main control unit, and the second interface is the control signal port of the Bluetooth adapter; or the first interface is the control signal port of the Bluetooth adapter, and the second interface is the control signal port of the main control unit.

[0039] In a second aspect, a Bluetooth adapter earphone case system is provided, comprising an earphone case as described in any of the preceding claims, and a detachable Bluetooth adapter, the Bluetooth adapter including a second antenna, wherein when the Bluetooth adapter is inserted into the earphone case, the second antenna is further configured to transmit the control signal to the Bluetooth earphone.

[0040] Thirdly, a Bluetooth headset is provided, including the headset case as described in any of the preceding claims.

[0041] This utility model relates to an interactive headphone case based on a Bluetooth adapter, a Bluetooth adapter headphone case system, and Bluetooth headphones. The headphone case includes: an external control unit for receiving control signals; a main control unit communicatively connected to the external control unit for outputting a working mode signal based on the relative position of the Bluetooth adapter and the headphone case; a first antenna communicatively connected to the main control unit for transmitting the control signal to the Bluetooth headphones based on the working mode signal; and a storage compartment formed inside the headphone case for accommodating a detachable Bluetooth adapter, with a USB interface at the bottom of the storage compartment. When the Bluetooth adapter is not inserted into the headphone case, the main control unit transmits the control signal to the Bluetooth headphones via the first antenna; when the Bluetooth adapter is inserted into the storage compartment and connected to the USB interface, the main control unit interacts with the Bluetooth adapter via the USB interface. In this embodiment of the invention, the Bluetooth adapter and the Bluetooth earphone case are detachable. When the Bluetooth adapter is not inserted into the Bluetooth earphone case, the main control unit transmits the control signal to the Bluetooth earphone through the first antenna. When the Bluetooth adapter is inserted into the storage compartment and connected to the USB interface, the main control unit interacts with the Bluetooth adapter through the USB interface. This allows for the selection of different data transmission methods according to different application scenarios, and enables the Bluetooth earphone to connect to external mobile devices via the Bluetooth adapter in various application scenarios. Furthermore, in this embodiment, the Bluetooth adapter is stored in the Bluetooth earphone case, making it less likely to be lost. Attached Figure Description

[0042] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0043] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 The diagram shown illustrates the application environment of the Bluetooth adapter-based interactive headphone case according to an embodiment of this utility model.

[0045] Figure 2 The diagram shown is a structural schematic of an interactive headphone case based on a Bluetooth adapter according to an embodiment of this utility model.

[0046] Figure 3 The diagram shown is a schematic of signal transmission when the Bluetooth adapter is inserted into the headphone case according to an embodiment of the present invention.

[0047] Figure 4 The diagram shown is a schematic of signal transmission of the Bluetooth adapter without it being inserted into the headphone case according to an embodiment of the present invention.

[0048] Figure 5 The diagram shown is a circuit diagram of the control subunit of this utility model embodiment;

[0049] Figure 6 The diagram shown is a circuit diagram of the communication subunit of an embodiment of this utility model;

[0050] Figure 7 The figure shown is a three-dimensional structural diagram of an interactive headphone case with a Bluetooth adapter according to an embodiment of the present invention.

[0051] Among them, 110 is the earphone case; 120 is the Bluetooth earphone; 130 is the external mobile device; 210 is the external control unit; 220 is the main control unit; 230 is the first antenna; 240 is the Bluetooth adapter; 241 is the second antenna; 710 is the storage compartment; 720 is the touch screen; and 730 is the USB interface. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0053] Figure 1 This is a diagram illustrating the application environment of an interactive headphone case 110 based on a Bluetooth adapter in one embodiment. (Refer to...) Figure 1 Bluetooth headset 120 can establish a Bluetooth connection with external mobile device 130 through the headset case 110.

[0054] External mobile device 130 can be a desktop computer without Bluetooth or other audio or electronic devices without Bluetooth. External mobile device 130 can also be a tablet computer, laptop computer, etc. with Bluetooth.

[0055] Figure 2 The diagram shown is a structural schematic of the earphone case 110 according to an embodiment of the present invention. Figure 7 The diagram shown is a three-dimensional structural schematic of the earphone case 110 according to an embodiment of the present invention. Figure 2 , Figure 7 As shown, the earphone case 110 includes:

[0056] External control unit 210 is used to receive control signals;

[0057] The main control unit 220 is communicatively connected to the external control unit 210 and is used to output a working mode signal according to the relative position of the Bluetooth adapter 240 and the earphone box;

[0058] The first antenna 230 is communicatively connected to the main control unit 220 and is used to transmit the control signal to the Bluetooth headset 120 according to the working mode signal.

[0059] A storage compartment 710 is formed inside the earphone case for accommodating a detachable Bluetooth adapter 240. A USB interface 730 is provided at the bottom of the storage compartment 710.

[0060] When the Bluetooth adapter 240 is not inserted into the earphone case, the main control unit 220 transmits the control signal to the Bluetooth earphone 120 through the first antenna 230.

[0061] When the Bluetooth adapter 240 is inserted into the storage compartment 710 and connected to the USB interface 730, the main control unit 220 interacts with the Bluetooth adapter 240 through the USB interface 730.

[0062] In this embodiment of the invention, the Bluetooth adapter 240 and the earphone case 110 are detachable. When the Bluetooth adapter 240 is stored in the earphone case 110, the main control unit 220 can interact with the Bluetooth adapter 240 to transmit control signals to the Bluetooth earphone 120. When the Bluetooth adapter 240 is not stored in the earphone case 110, the main control unit 220 can transmit control signals to the Bluetooth earphone 120 through the first antenna 230. Therefore, this invention can fully utilize the communication capabilities of the Bluetooth adapter to achieve Bluetooth communication with external mobile devices.

[0063] In this embodiment of the invention, at least one Hall sensor is also included, which is disposed at the bottom of the storage compartment 710 and connected to the main control unit, for detecting the insertion status of the Bluetooth adapter.

[0064] The storage compartment 710 of this utility model is a space inside the earphone case for accommodating a detachable Bluetooth adapter 240. The bottom of the storage compartment 710 can be in the form of a slot, with a Hall sensor located at the bottom of the slot. The ratio of the slot depth to the insertion length of the Bluetooth adapter 240 can be 1:0.8 to 0.9, which can effectively prevent the Bluetooth adapter 240 from being over-inserted.

[0065] The bottom of the storage compartment 710 may also include a magnetic positioning structure, specifically a magnet, to facilitate the positioning and attachment of the Bluetooth adapter 240 to the bottom of the storage compartment 710.

[0066] The USB interface 730 at the bottom of the storage compartment 710 can be a Type-C female connector slot, and the contacts of the Type-C female connector slot are connected to the main control unit 220 via a pogo pin spring pin.

[0067] In this embodiment of the invention, the Bluetooth adapter 240 is detachably mounted from the earphone case 110.

[0068] When the Bluetooth adapter 240 is inserted into the earphone case 110, the Bluetooth adapter 240 is used to connect to the external mobile device 130 through the earphone case 110.

[0069] When the Bluetooth adapter 240 is not inserted into the earphone case 110, the Bluetooth adapter 240 is used to directly connect to the external mobile device 130;

[0070] The Bluetooth adapter 240 includes a second antenna 241, which is used to transmit audio signals from the external mobile device 130 to the Bluetooth headset 120. The second antenna 241 is also used to transmit control signals to the Bluetooth headset 120 according to the working mode signal.

[0071] In daily use, when the space around the connection port of the external mobile device 130 is relatively narrow, or when it is difficult to place the headphone case 110 around the connection port of the external mobile device 130, or when there is a lack of corresponding connection cable to connect the headphone case 110 to the external mobile device 130, or when the headphone case 110 is underpowered, the Bluetooth adapter 240 can be taken out and used independently, even if the Bluetooth adapter 240 is directly connected to the external mobile device 130.

[0072] In this embodiment of the invention, the Bluetooth adapter 240 and the earphone case 110 are detachable. When the Bluetooth adapter 240 is inserted into the earphone case 110, it can connect to the external mobile device 130 through the earphone case 110. When the Bluetooth adapter 240 is not inserted into the earphone case 110, it can also connect directly to the external mobile device 130. This allows for different connection methods to be selected according to different application scenarios, and the Bluetooth earphone 120 can connect to the external mobile device 130 through the Bluetooth adapter 240 in different application scenarios. Furthermore, in this embodiment of the invention, the Bluetooth adapter 240 is stored in the earphone case 110, making it less likely to be lost.

[0073] In this embodiment of the present invention, when the Bluetooth adapter 240 is inserted into the earphone case 110, the second antenna 241 is also used to send the control signal to the Bluetooth earphone 120.

[0074] When the Bluetooth adapter 240 is not inserted into the earphone case 110, the first antenna 230 is also used to send the control signal to the Bluetooth earphone 120.

[0075] like Figure 3 As shown, when the Bluetooth adapter 240 is inserted into the earphone case 110, the first antenna 230 is disabled. Figure 3 (Not shown in the image) The second antenna 241 sends control signals from the external control unit 210 and audio signals from the external mobile device 130. At this time, the first antenna 230 and the second antenna 241 are close to each other. Using only one antenna to send signals can avoid interference, improve the quality of audio transmission, and reduce the delay of audio transmission.

[0076] In this embodiment of the utility model, such as Figure 4 As shown, when the Bluetooth adapter 240 is not inserted into the headphone case 110, the first antenna 230 is used to send control signals from the external control unit 210, and the second antenna 241 is used to send audio signals from the external mobile device 130. Both the first antenna 230 and the second antenna 241 are enabled, which can enhance the signal strength.

[0077] In this embodiment of the present invention, the main control unit 220 includes:

[0078] The control subunit is configured to output a high level when the Bluetooth adapter 240 is detected to be inserted into the headphone case 110;

[0079] The control subunit is also configured to output a low level when it detects that the Bluetooth adapter 240 is not inserted into the headphone case 110.

[0080] refer to Figure 5 As shown, the control subunit includes:

[0081] The first switch SW1 is turned off when the Bluetooth adapter 240 is inserted into the earphone case 110, and turned on when the Bluetooth adapter 240 is not inserted into the earphone case 110.

[0082] The first switch SW1 is turned on or off according to the plugging / unplugging status of the Bluetooth adapter, and the control subunit is used to output high / low level signals to the main control unit to indicate the working mode;

[0083] The positive terminal of the first capacitor C1 is connected to the power supply.

[0084] The first resistor R1 has its first end connected to the negative terminal of the first capacitor C1, and its second end connected to the first end of the first switch SW1.

[0085] The first end of the second resistor R2 is connected to the second end of the first switch SW1;

[0086] The base of the first transistor Q1 is connected to the second terminal of the second resistor R2, the emitter is grounded, and the collector is connected to the first output terminal.

[0087] The third resistor R3 has its first end connected to the negative terminal of the first capacitor C1, and its second end connected to the collector of the first transistor Q1.

[0088] In this embodiment of the present invention, the first resistor R1 is a pull-up resistor; the second resistor R2 is a base current limiting resistor to prevent excessive current from entering the base of the first transistor Q1; and the third resistor R3 is a collector pull-up resistor to ensure that the output terminal remains at a high level when the first transistor Q1 is cut off.

[0089] In this embodiment of the invention, the power supply can be +5V, and ground GND is used as a reference ground. The first transistor Q1 can be an NPN transistor.

[0090] like Figure 5 As shown, when the Bluetooth adapter 240 is inserted into the earphone case 110, the first switch SW1 is turned off, the base of the first transistor Q1 has no current and is therefore cut off, and the collector is pulled up to the power supply voltage through the third resistor R3. At this time, the control subunit outputs a high level.

[0091] When the Bluetooth adapter 240 is not inserted into the headphone case 110, the first switch SW1 is closed, the second resistor R2 sends current to the base of the first transistor Q1, the first transistor Q1 is turned on, and the control subunit outputs a low level at this time.

[0092] In this embodiment of the invention, the control sub-circuit can output high and low levels based on the relative positions of the Bluetooth adapter 240 and the earphone box 110, resulting in a simple circuit structure and high reliability.

[0093] In this embodiment of the present invention, the main control unit 220 further includes:

[0094] An antenna switching subunit, connected to the control subunit, is used to disable the first antenna 230 when the control subunit outputs a high level.

[0095] In this embodiment of the present invention, when the control subunit outputs a high level, that is, when the Bluetooth adapter 240 is inserted into the earphone box 110, the first antenna 230 is disabled when the first antenna 230 and the second antenna 241 are close together. This can avoid interference between the first antenna 230 and the second antenna 241, improve signal quality, and reduce power consumption.

[0096] In this embodiment of the present invention, the main control unit 220 further includes:

[0097] The communication subunit has a first end connected to the control signal port of the main control unit 220 and a second end connected to the control signal port of the Bluetooth adapter 240. It is used to enable the main control unit 220 to transmit the control signal to the Bluetooth headset 120 through the Bluetooth adapter 240 when the Bluetooth adapter 240 is detected to be inserted into the earphone box 110.

[0098] The communication subunit is also used to disconnect the communication link between the control signal port of the main control unit 220 and the control signal port of the Bluetooth adapter 240 when it is detected that the Bluetooth adapter 240 is not inserted into the earphone box 110.

[0099] refer to Figure 6 As shown, the communication subunit includes a detection contact for shorting to ground when the Bluetooth adapter 240 is inserted into the headphone case 110;

[0100] The detection contact is also used to suspend the Bluetooth adapter 240 when it is not inserted into the headphone case 110.

[0101] like Figure 6 As shown, the communication subunit includes:

[0102] The fourth resistor R4 has its first end connected to the first interface A1;

[0103] The positive terminal of the first diode D1 is connected to the second terminal of the fourth resistor R4;

[0104] The fifth resistor R5 has its first end connected to the power supply and its second end connected to the cathode of the first diode D.

[0105] The collector of the second transistor Q2 is connected to the negative terminal of the first diode D, and the collector is also connected to the second interface, while the emitter is grounded;

[0106] The sixth resistor R6 has its first end connected to the base of the second transistor Q2, and its second end connected to the detection contact.

[0107] Wherein, the first interface is the control signal port of the main control unit 220, and the second interface is the control signal port of the Bluetooth adapter 240; or the first interface is the control signal port of the Bluetooth adapter 240, and the second interface is the control signal port of the main control unit 220.

[0108] In this embodiment of the invention, the first diode D is a reverse-biased diode, which can prevent the signal from the second interface from flowing back to the first interface. The third resistor R3 serves as a current limiter. The fifth resistor R5 is a pull-up resistor for the communication bus, which is high when the communication bus is idle. The sixth resistor R6 is a base pull-up resistor for the second transistor Q2, which pulls the base of the second transistor Q2 high when the probe contact is floating. The second transistor Q2 can be an NPN transistor.

[0109] Figure 6 In the diagram, the first interface is A1, the second interface is A2, and the probe contact is B.

[0110] In this embodiment of the invention, the power supply can be +5V, and ground GND is the reference ground.

[0111] like Figure 6 As shown, when the Bluetooth adapter 240 is inserted into the earphone case 110, the detection contact is shorted to ground, the base of the second transistor Q2 is at a low level, the second transistor Q2 is cut off, and the communication link between the first interface and the second interface is turned on. The communication link between the first interface and the second interface can be a communication bus.

[0112] When the Bluetooth adapter 240 is not inserted into the earphone box 110, the detection contact is floating, the sixth resistor R6 pulls the base of the second transistor Q2 to a high level, the second transistor Q2 conducts, pulls the bus low to block communication, and prevents misoperation or incorrect data transmission.

[0113] In this embodiment of the invention, the physical isolation and protection of the communication bus can be achieved based on the relative position between the Bluetooth adapter 240 and the earphone box 110.

[0114] In this embodiment of the present invention, the earphone box 110 further includes a power supply module for supplying power to the Bluetooth adapter 240.

[0115] In this embodiment of the invention, the Bluetooth adapter 240 can draw power from the earphone case 110 when it is inside the earphone case 110, thus avoiding the inability to use the Bluetooth adapter 240 due to insufficient power. Furthermore, this embodiment reuses the charging case battery to power the Bluetooth adapter 240, eliminating the need for a separate power supply for the Bluetooth adapter 240, reducing the size of the Bluetooth battery case, and lowering costs.

[0116] In this embodiment of the utility model, reference is made to Figure 7 As shown, the external control unit 210 includes a touch screen 720 and / or buttons.

[0117] This utility model also provides a Bluetooth adapter earphone case system, including an earphone case as described in any of the preceding claims, and a detachable Bluetooth adapter 240, the Bluetooth adapter 240 including a second antenna 241, the second antenna 241 being used to send the control signal to the Bluetooth earphone 120 when the Bluetooth adapter 240 is inserted into the earphone case.

[0118] This utility model also provides a Bluetooth headset 120, including the headset case 110 as described in any of the preceding claims.

[0119] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0120] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. 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 present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An interactive headphone case based on a Bluetooth adapter, characterized in that, The earphone case includes: An external control unit is used to receive control signals; The main control unit is communicatively connected to the external control unit and is used to output a working mode signal according to the relative position of the Bluetooth adapter and the earphone box; The first antenna is communicatively connected to the main control unit and is used to transmit the control signal to the Bluetooth headset according to the working mode signal. A storage compartment, formed inside the earphone case, is used to accommodate a detachable Bluetooth adapter, and a USB port is provided at the bottom of the storage compartment; When the Bluetooth adapter is not inserted into the earphone case, the main control unit transmits the control signal to the Bluetooth earphone through the first antenna; When the Bluetooth adapter is inserted into the storage compartment and connected to the USB interface, the main control unit interacts with the Bluetooth adapter via the USB interface.

2. The earphone case according to claim 1, characterized in that, It also includes at least one Hall sensor, located at the bottom of the storage compartment and connected to the main control unit, for detecting the insertion status of the Bluetooth adapter.

3. The earphone case according to claim 1, characterized in that, The main control unit includes: The control subunit is configured to output a high level when the Bluetooth adapter is detected to be inserted into the headphone case; The control subunit is also configured to output a low level when it detects that the Bluetooth adapter is not inserted into the headphone case.

4. The earphone case according to claim 3, characterized in that, The control subunit includes: The first switch is turned off when the Bluetooth adapter is inserted into the headphone case and closed when the Bluetooth adapter is not inserted into the headphone case. The first switch is turned on or off according to the insertion and removal status of the Bluetooth adapter. The control subunit is used to output high / low level signals to the main control unit to indicate the working mode. The positive terminal of the first capacitor is connected to the power supply. The first resistor has its first end connected to the negative terminal of the first capacitor and its second end connected to the first terminal of the first switch. The second resistor has its first end connected to the second end of the first switch; The first transistor has its base connected to the second terminal of the second resistor, its emitter grounded, and its collector connected to the first output terminal. The third resistor has its first end connected to the negative terminal of the first capacitor and its second end connected to the collector of the first transistor.

5. The earphone case according to claim 3, characterized in that, The main control unit also includes: An antenna switching subunit, connected to the control subunit, is used to disable the first antenna when the control subunit outputs a high level.

6. The earphone case according to claim 1, characterized in that, The main control unit also includes: The communication subunit has a first end connected to the control signal port of the main control unit and a second end connected to the control signal port of the Bluetooth adapter. It is used to enable the main control unit to transmit the control signal to the Bluetooth headset through the Bluetooth adapter when the Bluetooth adapter is detected to be inserted into the headphone case. The communication subunit is also used to disconnect the communication link between the main control unit control signal port and the Bluetooth adapter control signal port when it is detected that the Bluetooth adapter is not inserted into the earphone case.

7. The earphone case according to claim 6, characterized in that, The communication subunit includes a detection contact for shorting to ground when the Bluetooth adapter is inserted into the headphone case; The detection contact is also used to suspend the Bluetooth adapter when it is not inserted into the headphone case.

8. The earphone case according to claim 7, characterized in that, The communication subunit includes: The fourth resistor has its first terminal connected to the first interface; The positive terminal of the first diode is connected to the second terminal of the fourth resistor; The fifth resistor has its first end connected to the power supply and its second end connected to the negative terminal of the first diode. The collector of the second transistor is connected to the negative terminal of the first diode, and the collector is also connected to the second interface; the emitter is grounded. The sixth resistor has its first end connected to the base of the second transistor and its second end connected to the detection contact. Wherein, the first interface is the control signal port of the main control unit, and the second interface is the control signal port of the Bluetooth adapter; or the first interface is the control signal port of the Bluetooth adapter, and the second interface is the control signal port of the main control unit.

9. A Bluetooth adapter earphone case system, characterized in that, The device includes an earphone case as described in any one of claims 1 to 8, and a detachable Bluetooth adapter, the Bluetooth adapter including a second antenna, which is further configured to transmit the control signal to the Bluetooth earphone when the Bluetooth adapter is inserted into the earphone case.

10. A Bluetooth headset, characterized in that, Includes the headphone case as described in any one of claims 1 to 8.

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