Expandable vehicle-mounted audio device and wired and wireless switching method

Abstract

The invention relates to an expandable vehicle-mounted sound device and a wired and wireless switching method, and relates to the technical field of automobile sound equipment, and the embodiment of the invention provides the expandable vehicle-mounted sound device, and the device comprises a mounting groove, the inner surface of which is provided with a connection port; a sound host; the sound equipment body is detachably arranged in the mounting groove, and a connecting plug is arranged on the outer surface of the sound equipment body; when the sound equipment body is placed in the mounting groove, the connecting plug is matched with the connecting port, and the sound equipment body is in wired connection with the sound equipment host; when the sound equipment body is separated from the mounting groove, the sound equipment body automatically turns on the Bluetooth and is preferentially connected with the sound equipment host through the Bluetooth; and when the sound equipment body exceeds the connection range of the Bluetooth of the sound equipment host, the sound equipment body is automatically matched with the Bluetooth, and the trusted external equipment of which the Bluetooth is started in the signal range is in Bluetooth connection according to a set priority arrangement sequence. According to the vehicle-mounted audio device and the wired and wireless switching method, the requirement of detaching the audio body into the vehicle or out of the vehicle for scene expansion is met.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive audio, and particularly relates to an expandable in-vehicle audio device and a method for wired / wireless switching. Background Art

[0002] With the progress of technology, the automotive Internet of Vehicles and automotive electronics technology are changing with each passing day. Now, each automobile is equipped with an in-vehicle audio system based on the vehicle host. People's requirements for the in-vehicle audio system are getting higher and higher. It should not only be fashionable, but also have a strong sense of modern technology, be convenient to use, and have a low cost. At the same time, as the users of automobiles are getting younger, the demand for outdoor camping to listen to music / hold a party and sing while driving out is becoming more and more intense.

[0003] In the related art, the audio body of the traditional in-vehicle audio system often cannot be externally played. The audio body is embedded in the vehicle body and cannot be detached or expanded.

[0004] However, automobile users have the need to detach the audio to use it inside or outside the vehicle. Therefore, those skilled in the art are eager to design an expandable in-vehicle audio. Summary of the Invention

[0005] The present application provides an expandable in-vehicle audio device and a method for wired / wireless switching, which meet the requirement of detaching the audio body to the inside or outside of the vehicle for scenario expansion.

[0006] In a first aspect, an embodiment of the present application provides an expandable in-vehicle audio device, including:

[0007] An installation groove provided in the cab, and a connection port is provided on its inner surface;

[0008] An audio host provided outside the installation groove, and its Bluetooth is always on;

[0009] An audio body with Bluetooth function, which is detachably arranged in the installation groove, and a connection plug is provided on its outer surface; when the audio body is placed in the installation groove, the connection plug matches the connection port, and the audio body is wired-connected to the audio host;

[0010] When the audio body is detached from the installation groove, the audio body automatically turns on Bluetooth and preferentially connects to the audio host via Bluetooth; when the audio body is out of the Bluetooth connection range of the audio host, the Bluetooth of the audio body automatically matches and connects to the trusted and Bluetooth-enabled external devices within the Bluetooth connection signal range according to the set priority arrangement order.

[0011] In combination with the first aspect, in an embodiment, the audio body is used to record the number of Bluetooth connections;

[0012] The trusted and Bluetooth-enabled external device includes an external device that has ever made a Bluetooth connection with the host Bluetooth or the audio body;

[0013] The priority arrangement order sorts each external device according to the historical number of connections. The more the number of connections, the higher the priority.

[0014] Combined with the first aspect, in an embodiment, the audio body includes:

[0015] A battery for power supply;

[0016] A speaker unit for converting an electrical signal into sound;

[0017] A circuit board, which includes a main control chip, an audio power amplifier chip, and a Bluetooth chip; the main control chip is used to record the number of connections of each external device to the Bluetooth chip, and form a priority arrangement order according to the historical number of connections of each external device;

[0018] Control buttons, which include a switch for operating the audio and a switch for volume adjustment.

[0019] Combined with the first aspect, in an embodiment, the installation groove is arranged at the lower rear of the sub-instrument panel, and an upward connection port is arranged at the bottom of the installation groove; a connection plug is arranged downward at the bottom of the audio body;

[0020] The connection port uses a USB interface, and the connection plug uses a USB plug.

[0021] Combined with the first aspect, in an embodiment, the audio body is further provided with a signal lamp, and when the connection plug matches the connection port, the signal lamp lights up;

[0022] The vehicle-mounted audio device further includes a dust cover. The installation groove is arranged in a rectangular frame structure, and a part of the structure of the sub-instrument panel is located directly above the rectangular frame structure; a certain gap is arranged between the top surface of the rectangular frame structure and the sub-instrument panel, and the dust cover can be inserted and removed in the gap.

[0023] Combined with the first aspect, in an embodiment, a plurality of suction cups are arranged in the installation groove, and the plurality of suction cups are used for adsorbing and fixing one side of the audio body.

[0024] In a second aspect, an embodiment of the present application provides a wired / wireless switching method based on the above vehicle-mounted audio device, including the following steps:

[0025] The audio body is placed in the installation groove. The Bluetooth of the audio host is always on, the Bluetooth of the audio body is off, the audio body is wired to the audio host, and the audio signal of the audio body is obtained from the audio host;

[0026] The sound body detaches from the installation groove, the sound body automatically turns on Bluetooth, switches from wired connection to wireless connection, and preferentially connects to the sound host via Bluetooth;

[0027] When the sound body is carried beyond the Bluetooth connection range of the sound host, the Bluetooth of the sound body automatically matches and preferentially connects to the trusted and Bluetooth-enabled external devices within the Bluetooth connection signal range according to the set priority arrangement order.

[0028] Combined with the second aspect, in an embodiment, the sound body is used to record the number of Bluetooth connections;

[0029] The preferentially connecting to the trusted and Bluetooth-enabled external devices within the Bluetooth connection signal range according to the set priority arrangement order includes:

[0030] When there are multiple trusted and Bluetooth-enabled external devices within the Bluetooth connection signal range of the sound body, the sound body sorts according to the historical connection times of each external device. The more the historical connection times, the higher the priority;

[0031] When the currently connected external device turns off Bluetooth, it automatically connects to the next-priority external device.

[0032] Combined with the second aspect, in an embodiment, when the sound body is carried beyond the Bluetooth connection range of the sound host, it further includes:

[0033] When none of the external devices within the Bluetooth connection signal range of the sound body have Bluetooth turned on, the sound body sends a connection reminder to the trusted but Bluetooth-unenabled external devices.

[0034] Combined with the second aspect, in an embodiment, when the sound body automatically turns on Bluetooth and switches from wired connection to wireless connection, it further includes:

[0035] When both the Bluetooth of the sound host and the trusted and Bluetooth-enabled external devices are within the Bluetooth connection range of the sound body, the Bluetooth of the sound host can be turned off by voice control.

[0036] The beneficial effects brought by the technical solution provided by the embodiments of the present application at least include:

[0037] 1. The in-vehicle audio device of the present application, different from traditional in-vehicle audio, separates the audio host and the audio body in design, and both have Bluetooth functions. They can be connected either wired or wirelessly. When connected wired, the audio body is placed in the installation groove, and the connection plug matches the connection port. At this time, the Bluetooth of the audio body is turned off, and the audio body is wired-connected to the audio host, and wired signal transmission is carried out between the two. When an external device makes a Bluetooth connection at this time, it makes a Bluetooth connection with the host. The external device transmits the audio signal to the host, and the host transmits the audio signal to the audio body for playback. When connected wirelessly, the audio body is removed from the installation groove, and the Bluetooth of the audio body is automatically turned on. It preferentially makes a Bluetooth connection with the audio host. During the process of switching from wired to wireless, the Bluetooth of the audio body is automatically turned on and quickly matches and connects, achieving an efficient and fast switch from wired to wireless, with good user experience and meeting the needs of different users. Further, when the audio body exceeds the Bluetooth connection range of the audio host, the Bluetooth of the audio body automatically matches and makes a Bluetooth connection with trusted and Bluetooth-enabled external devices within the signal range according to the pre-set priority arrangement order. At this time, after the audio body is disassembled, it can be directly carried around and used as a Bluetooth speaker, which is convenient to use and meets the needs of scene expansion inside or outside the vehicle.

[0038] 2. The in-vehicle audio device of the present application. The audio body can be connected wired to form a traditional in-vehicle audio in combination with the audio host. The audio body can also be disconnected from the audio host and wirelessly connect to the audio host or other external devices through the speaker unit and multiple chips on the circuit board. More importantly, the main control chip is used to record the connection times of each external device connecting to the Bluetooth chip, and forms a priority arrangement order according to the historical connection times of each external device, which orderly standardizes the connection rules of multiple external devices within the connection range. At the same time, it also shortens the time for switching from wired to wireless and the time for switching from connecting to the audio host via Bluetooth to connecting to an external device via Bluetooth, with good user experience.

[0039] 3. The wired / wireless switching method of the present application. When the audio body is placed in the installation groove, the audio body is wired-connected to the audio host, and this is the wired connection state at this time. When the audio body is removed from the installation groove, the Bluetooth of the audio body is automatically turned on, and it preferentially makes a Bluetooth connection with the audio host. When the audio body exceeds the Bluetooth connection range of the audio host, the Bluetooth of the audio body automatically matches and makes a Bluetooth connection with trusted and Bluetooth-enabled external devices within the signal range according to the pre-set priority arrangement order. It can not only conveniently and quickly switch from wired to wireless, but also efficiently switch from wirelessly connecting to the audio host to wirelessly connecting to an external device, with good user experience and meeting the scene expansion needs of different users.

[0040] 4. The wired / wireless switching method of the present application, when there are multiple trusted and Bluetooth-enabled external devices outside the Bluetooth connection range of the audio host and within the Bluetooth connection signal range of the audio body, the audio body sorts and connects according to the historical connection times of each external device. The more the historical connection times, the higher the priority. This setting can preferentially and automatically connect the external device of the driver (such as mobile phone, tablet or computer, etc.); when the Bluetooth of the currently connected external device is turned off, connect to the external device with the next priority. This setting can be applied to connect with the external devices of other passengers when the driver's external device is not wanted, and is applicable to a variety of application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0042] Figure 1 Schematic diagram of the installation groove, dust cover and sub-instrument panel of the in-vehicle audio device provided by the embodiment of the present application;

[0043] Figure 2 Top view of the installation groove of the in-vehicle audio device provided by the embodiment of the present application;

[0044] Figure 3 Flow chart of the wired / wireless switching method provided by the embodiment of the present application;

[0045] In the figure: 1, USB interface; 2, installation groove; 3, dust cover; 4, suction cup; 5, signal lamp; 6, sub-instrument panel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] In order to enable those skilled in the art to better understand the solution of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0047] The embodiment of the present application provides an expandable in-vehicle audio device and a wired / wireless switching method, which meet the requirements of disassembling the audio body to the inside or outside of the vehicle for scenario expansion.

[0048] In the first aspect, as Figure 1 、 Figure 2 and Figure 3As shown, an embodiment of an expandable in-vehicle audio device is disclosed in the present application. The in-vehicle audio device includes an audio host, a mounting groove 2, and an audio body.

[0049] The mounting groove 2 is arranged in the cab, and a connection port is arranged on its inner surface for connecting the audio body. The audio host is arranged outside the mounting groove 2, and its Bluetooth is always on, facilitating external signal connection.

[0050] The audio body has a Bluetooth function. The audio body is detachably arranged in the mounting groove 2, and a connection plug is arranged on its outer surface. When the audio body is placed in the mounting groove 2, the connection plug matches the connection port, and the audio body is wired-connected to the audio host. Specifically, when the audio body is wired-connected, the Bluetooth of the audio body is always off. Once the wired connection is disconnected, the Bluetooth of the audio body is turned on.

[0051] When the audio body is separated from the mounting groove 2, the audio body automatically turns on the Bluetooth and preferentially Bluetooth-connects to the audio host, jumping from the wired connection to the wireless connection, with a fast and efficient switch; specifically, after the audio body automatically turns on the Bluetooth, even if there are other connectable options within the connection range, it still preferentially connects to the audio host.

[0052] When the audio body is outside the Bluetooth connection range of the audio host, the Bluetooth of the audio body automatically matches and automatically Bluetooth-connects to a trusted and Bluetooth-enabled external device within the signal range according to the pre-set priority arrangement order.

[0053] Specifically, the audio host is connected to an antenna and has the ability to receive wireless signals; when the audio body is wired-connected to the audio host, the audio host can remotely receive wireless signals through the antenna and then project the audio through the audio body; the audio host can also be Bluetooth-connected to an external device. After the audio host receives the audio signal from the external device, it then projects the audio through the audio body.

[0054] The in-vehicle audio device of the present application is different from traditional in-vehicle audio devices. The audio host and the audio body are separately designed, and both have Bluetooth functions. They can be connected either wired or wirelessly. When wired-connected, the audio body is placed in the mounting groove 2, and the connection plug matches the connection port. At this time, the Bluetooth of the audio body is turned off, and the audio body is wired-connected to the audio host, and wired signal transmission occurs between the two; at this time, when an external device makes a Bluetooth connection, it makes a Bluetooth connection with the host, and the external device transmits the audio signal to the host, and the host transmits the audio signal to the audio body for playback. When wirelessly connected, the audio body is separated from the mounting groove 2, the audio body automatically turns on the Bluetooth, preferentially Bluetooth-connects to the audio host. During the process of switching from wired to wireless, the audio body automatically turns on the Bluetooth and quickly matches the connection, achieving an efficient and fast cut from wired to wireless, with a good user experience and being able to meet the needs of different users.

[0055] Further, when the sound body exceeds the Bluetooth connection range of the sound host, the Bluetooth of the sound body automatically matches and Bluetooth connects to the trusted and Bluetooth-enabled external devices within the Bluetooth connection signal range according to the pre-set priority arrangement order; at this time, after the sound body is disassembled, it can be directly carried around and used as a Bluetooth speaker, which is convenient to use and meets the needs of scenario expansion inside or outside the vehicle.

[0056] Specifically, the external devices refer to devices such as mobile phones, tablets, computers, smart watches, etc. that can perform wireless connections.

[0057] Specifically, the Bluetooth connection range of the vehicle's sound host is usually about 3m.

[0058] Further, in one embodiment, the sound body is used to record the number of Bluetooth connections.

[0059] The trusted and Bluetooth-enabled external devices include external devices that have ever performed Bluetooth connections with the sound host or the sound body.

[0060] The priority arrangement order sorts each external device according to the historical number of connections. The more the number of connections, the higher the priority.

[0061] For the in-vehicle audio device of the present application, the sound body has the function of recording the number of Bluetooth connections, and the pre-set priority arrangement order sorts each external device according to the historical number of connections. The more the number of connections, the higher the priority. When the sound body is carried out of the Bluetooth connection range of the sound host, the sound body can act as a Bluetooth headset and Bluetooth connect to the trusted and Bluetooth-enabled external devices within the Bluetooth connection signal range according to the pre-set priority arrangement order, enabling free and efficient connection, strong scenario expansion ability, and good driving and riding experience.

[0062] Further, in one embodiment, the sound body includes a battery, a speaker unit, a circuit board, and control buttons.

[0063] The battery is used to supply power to the other power-consuming parts, provides power support for the sound, and the capacity and type of the battery will affect the battery life of the sound.

[0064] The speaker unit is used to convert the electrical signal into sound, is responsible for converting the electrical signal into sound, and the quality and design of the speaker unit directly affect the sound quality.

[0065] The circuit board includes a main control chip, an audio power amplifier chip, and a Bluetooth chip, and is responsible for processing audio signals and controlling various functions of the sound; among them, the main control chip is used to record the number of connections of each external device to the Bluetooth chip and form a priority arrangement order according to the historical number of connections of each external device.

[0066] A control button, which includes a switch for operating the audio and a switch for volume adjustment.

[0067] The audio body further includes a housing, which is used to protect the audio unit and the circuit board, and the material and manufacturing process will affect the cost and appearance.

[0068] Specifically, a traditional in-vehicle audio includes an antenna, an audio main unit, a power amplifier, and speakers. The in-vehicle audio device of the present application is equivalent to being disassembled. The antenna and the audio main unit are separately arranged, the audio body is separately arranged, and the audio body has functions such as power amplification and sound reproduction.

[0069] For the in-vehicle audio device of the present application, the audio body can be connected by wire and combined with the audio main unit to form a traditional in-vehicle audio; the audio body can also be disconnected from the audio main unit and wirelessly connected to the audio main unit or other external devices through the speaker unit and multiple chips on the circuit board; more importantly, the main control chip is used to record the connection times of each external device connecting to the Bluetooth chip, and form a priority arrangement order according to the historical connection times of each external device, which orderly standardizes the connection rules of multiple external devices within the connection range, and at the same time shortens the time from wired to wireless, and also shortens the time from connecting to the audio main unit via Bluetooth to connecting to an external device via Bluetooth, providing a good user experience.

[0070] Further, in an embodiment, the installation groove 2 is arranged at the lower rear of the passenger instrument panel 7, and a connecting port facing upward is arranged at the bottom of the installation groove 2; a connecting plug is arranged downward at the bottom of the audio body. Specifically, the connecting port adopts a USB interface 1, and the connecting plug adopts a USB plug.

[0071] The USB interface 1 and the USB plug are connected in an up-and-down matching form.

[0072] Preferably, a guiding structure is further arranged around the installation groove 2. The audio body is placed into the installation groove 2 along the guiding structure. As long as it is placed correctly, the USB interface 1 and the USB plug will be aligned and connected. The guiding structure provides a structural basis for the rapid wired-wireless switching.

[0073] Further, in an embodiment, a signal lamp 5 is also arranged on the audio body. When the connecting plug is matched with the connecting port, the signal lamp 5 lights up, enabling the driver and passengers to intuitively perceive the connection state of the audio body.

[0074] The in-vehicle audio device further includes a dust cover 3. The installation groove 2 is arranged in a rectangular frame structure, and a part of the passenger instrument panel 7 is located directly above the rectangular frame structure; a certain gap is arranged between the top surface of the rectangular frame structure and the passenger instrument panel 7, and the dust cover 3 can be inserted and removed in the gap.

[0075] Specifically, the dust cover 3 is a movable plastic plate. When the audio player of the audio body plays audio, the dust cover retracts into the gap. When the audio body is removed from the installation groove, the dust cover can be opened to prevent dust from falling.

[0076] Further, in one embodiment, a plurality of suction cups 4 are arranged in the installation groove 2, and the plurality of suction cups 4 are used to adsorb and fix one side of the audio body. The plurality of suction cups 4 can make the process of placing the audio body into the installation groove easier and more convenient, which is beneficial for the USB plug to be inserted into the USB interface 1.

[0077] In a second aspect, the present application discloses a wired / wireless switching method based on the above in-vehicle audio device, including the following steps:

[0078] S1: The audio body is placed in the installation groove 2, the Bluetooth of the audio host is always on, the Bluetooth of the audio body is off, the connection plug is matched with the connection port, the audio body is wired-connected to the audio host, and the audio signal of the audio body is obtained from the audio host.

[0079] S2: The audio body is removed from the installation groove 2, the Bluetooth of the audio body is automatically turned on, and it switches from wired connection to wireless connection quickly and efficiently, and preferentially connects to the audio host via Bluetooth.

[0080] S3: When the audio body is carried beyond the Bluetooth connection range of the audio host, the Bluetooth of the audio body automatically matches and preferentially connects to trusted and Bluetooth-enabled external devices within the Bluetooth signal range according to the pre-set priority arrangement order.

[0081] In the wired / wireless switching method of the present application, when the audio body is placed in the installation groove 2, the audio body is wired-connected to the audio host, and this is the wired connection state at this time; when the audio body is removed from the installation groove 2, the Bluetooth of the audio body is automatically turned on, and it preferentially connects to the audio host via Bluetooth. When the audio body is beyond the Bluetooth connection range of the audio host, the Bluetooth of the audio body automatically matches and preferentially connects to trusted and Bluetooth-enabled external devices within the Bluetooth signal range according to the pre-set priority arrangement order. It can not only conveniently and quickly switch from wired to wireless, but also efficiently switch from wirelessly connecting to the audio host to wirelessly connecting to external devices, providing a good user experience and meeting the scenario expansion needs of different users.

[0082] Further, in one embodiment, the situation of wireless to wired is just the opposite.

[0083] Further, in one embodiment, the audio body is used to record the number of Bluetooth connections.

[0084] In step S3, preferentially connecting to trusted and Bluetooth-enabled external devices within the Bluetooth signal range according to the pre-set priority arrangement order includes:

[0085] When there are multiple trusted and Bluetooth-enabled external devices within the Bluetooth connection signal range of the audio body, the audio body sorts them according to the historical connection times of each external device. The more the historical connection times, the higher the priority.

[0086] When the Bluetooth of the external device being connected is turned off, connect to the external device with the next highest priority.

[0087] The wired / wireless switching method of the present application, when outside the Bluetooth connection range of the audio host and there are multiple trusted and Bluetooth-enabled external devices within the Bluetooth connection signal range of the audio body, the audio body sorts and connects them according to the historical connection times of each external device. The more the historical connection times, the higher the priority. This setting can preferentially and automatically connect the external devices (such as mobile phones, tablets, or computers) of the driver. When the Bluetooth of the external device being connected is turned off, connect to the external device with the next highest priority. This setting can be applied when the driver's external device is not wanted, and the external devices of other passengers can be used for connection, which is applicable to a variety of application scenarios.

[0088] Further, in an embodiment, in step S3, when the audio body is carried outside the Bluetooth connection range of the audio host, it further includes:

[0089] When none of the external devices within the Bluetooth connection signal range of the audio body have Bluetooth enabled, the audio body sends a connection reminder to the trusted but Bluetooth-disabled external devices.

[0090] The wired / wireless switching method of the present application, when outside the Bluetooth connection range of the audio host and there are no trusted and Bluetooth-enabled external devices within the Bluetooth connection signal range of the audio body, the audio body sends a connection reminder to the trusted but Bluetooth-disabled external devices, improving the efficiency of wireless connection switching.

[0091] Further, in an embodiment, in step S2, when the audio body automatically turns on Bluetooth and switches from wired connection to wireless connection, it further includes:

[0092] When both the Bluetooth of the audio host and the trusted and Bluetooth-enabled external devices are within the Bluetooth connection range of the audio body, the Bluetooth of the audio host can be turned off through voice control.

[0093] This setting is applicable to the following scenario: after switching to wireless connection, but both the Bluetooth of the audio host and the external device are within the connection range of the audio body, but the driver or passenger does not want to connect to the audio host but wants to connect to the external device.

[0094] Further, in an embodiment, the trusted and Bluetooth-enabled external devices include the external devices that have ever made a Bluetooth connection with the audio host or the audio body.

[0095] Further, in one embodiment, the audio body includes a battery, a speaker unit, a circuit board, and control buttons. The battery is used to supply power to the other power - required parts, providing power support for the audio. The capacity and type of the battery will affect the battery life of the audio.

[0096] The speaker unit is used to convert electrical signals into sound. The speaker unit is responsible for converting electrical signals into sound, and the quality and design of the speaker unit directly affect the sound quality.

[0097] The circuit board includes a main control chip, an audio power amplifier chip, and a Bluetooth chip. The circuit board is responsible for processing audio signals and controlling various functions of the audio. Among them, the main control chip is used to record the connection times of each external device connecting to the Bluetooth chip, and form a priority arrangement order according to the historical connection times of each external device.

[0098] The control buttons include a switch for operating the audio and a switch for volume adjustment.

[0099] The audio body also includes a housing, which is used to protect the audio unit and the circuit board. The material and manufacturing process will affect the cost and appearance.

[0100] During the process of switching from wired to wireless, and switching the wireless connection from one external device to another external device, mainly the Bluetooth chip is used for connection, and the main control chip is used to determine which external device to connect to.

[0101] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation of the present application. Unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0102] It should be noted that in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0103] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. An expandable in-vehicle audio device, characterized in that, Comprising: An installation groove (2) provided in the cab, with a connection port provided on its inner surface; An audio host provided outside the installation groove (2), with its Bluetooth always on; An audio body with Bluetooth function, which is detachably arranged in the installation groove (2), and a connection plug is provided on its outer surface; when the audio body is placed in the installation groove (2), the connection plug matches the connection port, and the audio body is wired-connected to the audio host; When the audio body is detached from the installation groove (2), the audio body automatically turns on Bluetooth and preferentially Bluetooth-connects to the audio host; when the audio body is outside the Bluetooth connection range of the audio host, the Bluetooth of the audio body automatically matches and Bluetooth-connects to a trusted and Bluetooth-enabled external device within the Bluetooth connection signal range according to the set priority arrangement order.

2. The expandable in-vehicle audio device according to claim 1, wherein: The audio body is used to record the number of Bluetooth connections; The trusted and Bluetooth-enabled external device includes an external device that has ever performed a Bluetooth connection with the host or the audio body; The priority arrangement order sorts each external device according to the historical number of connections, and the more the number of connections, the higher the priority.

3. An expandable in-vehicle audio device as described in claim 1, characterized in that, The audio body includes: A battery for power supply; A speaker unit for converting an electrical signal into sound; A circuit board, which includes a main control chip, an audio power amplifier chip, and a Bluetooth chip; the main control chip is used to record the number of connections of each external device to the Bluetooth chip and form a priority arrangement order according to the historical number of connections of each external device; Control buttons, which include a switch for operating the audio and a switch for volume adjustment.

4. The expandable vehicle-mounted device according to claim 1, wherein: The installation groove (2) is provided at the rear lower part of the passenger instrument panel (7), and an upward-facing connection port is provided at the bottom of the installation groove (2); a connection plug is provided downward at the bottom of the audio body; The connection port adopts a USB interface (1), and the connection plug adopts a USB plug.

5. The expandable vehicle-mounted audio device according to claim 1, wherein: The audio body is further provided with a signal lamp (5), and when the connection plug matches the connection port, the signal lamp (5) lights up; The vehicle-mounted audio device further includes a dust cover (3), the installation groove (2) is provided in a rectangular frame structure, and a part of the structure of the passenger instrument panel (7) is located directly above the rectangular frame structure; a certain gap is provided between the top surface of the rectangular frame structure and the passenger instrument panel (7), and the dust cover (3) can be inserted and removed in the gap.

6. The expandable in-vehicle audio device according to claim 1, wherein: A plurality of suction cups (4) are provided in the installation groove (2), and the plurality of suction cups (4) are used to adsorb and fix one side of the audio body.

7. A wired / wireless switching method for the in-vehicle audio device according to claim 1, characterized in that, Including the following steps: The audio body is placed in the installation groove (2), the Bluetooth of the audio host is always on, the Bluetooth of the audio body is turned off, the audio body is wired-connected to the audio host, and the audio signal of the audio body is obtained from the audio host; The audio body is detached from the installation groove (2), the audio body automatically turns on Bluetooth, switches from wired connection to wireless connection, and preferentially Bluetooth-connects to the audio host; When the audio body is carried beyond the Bluetooth connection range of the audio host, the Bluetooth of the audio body automatically matches and Bluetooth-connects to the trusted and Bluetooth-enabled external devices within the Bluetooth connection signal range according to the set priority arrangement order.

8. The wired / wireless switching method according to claim 7, characterized in that: The audio body is used to record the number of Bluetooth connections; The Bluetooth-connecting to the trusted and Bluetooth-enabled external devices within the Bluetooth connection signal range according to the set priority arrangement order includes: When there are multiple trusted and Bluetooth-enabled external devices within the Bluetooth connection signal range of the audio body, the audio body sorts them according to the historical connection times of each external device. The more the historical connection times, the higher the priority; When the Bluetooth of the external device being connected is turned off, the next external device with a higher priority is automatically connected.

9. The wired / wireless switching method according to claim 7, wherein When the audio body is carried beyond the Bluetooth connection range of the audio host, it further includes: When none of the external devices within the Bluetooth connection signal range of the audio body have Bluetooth enabled, the audio body sends a connection reminder to the trusted but Bluetooth-disabled external devices.

10. The wired / wireless switching method according to claim 7, wherein: The audio body automatically turns on Bluetooth and switches from wired connection to wireless connection, and it further includes: When both the Bluetooth of the audio host and the trusted and Bluetooth-enabled external devices are within the Bluetooth connection range of the audio body, the Bluetooth of the audio host can be turned off by voice control.

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