Vehicle-mounted concealed USB charging interface module

Abstract

The utility model relates to a vehicle-mounted concealed USB charging interface module, which comprises a charging module and a dustproof device, the dustproof device further comprises an induction unit and an automatic sealing unit, the induction unit comprises an infrared inductor and a Hall inductor, and the automatic sealing unit comprises a sealing plate and an operating part. A human body contacts the infrared sensor to start the operation part, the sealing plate is opened through the operation part, then the on-off state of the USB interface is recognized through the Hall sensor, automatic operation is achieved through sensing, and due to the design, automatic protection can be achieved, external liquid is prevented from invading and damaging a circuit, and damage caused by dust accumulation in a vehicle is also avoided; and meanwhile, the influence of vehicle interior trim surface incompleteness on the attractiveness is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle-mounted charging technical field, especially a kind of vehicle-mounted concealed USB charging interface module. BACKGROUND

[0002] At present, cars have become the necessary traffic tools for most families to travel, and the popularity of cars also makes various kinds of vehicle-mounted appliances emerge as the times require, which makes people's travel more convenient. The vehicle-mounted charger is a kind of vehicle-mounted power supply for charging electronic products. It is widely used and portable equipment is charged from the battery. The vehicle-mounted charger is welcomed by the majority of drivers due to its convenience and small size. However, the current USB charging module of passenger car is an external interface mode, which is easy to get dust or be damaged by liquid in long-term harsh conditions, resulting in that the mobile phone cannot be charged, which is not only not beautiful but also unreliable.

[0003] The utility model patent with application number CN202022600710.1 discloses a dustproof vehicle-mounted USB charger, which comprises a main body and a dustproof mechanism. The dustproof mechanism is arranged on the main body. The dustproof mechanism comprises a dustproof assembly and an opening assembly. The dustproof assembly has two parts, which are arranged on both sides of the main body. The opening mechanism comprises a fixed block, a rotating shaft, a rotating knob and a pulling assembly. The vehicle-mounted USB charging plug with dustproof function seals the socket through the dustproof assembly to prevent dust accumulation and protect the main body. The movement of the sealing plate is realized by rotating the opening mechanism to open the plug. Compared with the existing dustproof mechanism, the dustproof mechanism effectively prevents dust from entering the socket. However, the applicant found that the above operation still has some shortcomings: 1. When charging is needed, the dustproof device needs to be manually opened. When not in use, it needs to be manually closed to achieve waterproof and dustproof. If the driver leaves directly after unplugging the charging cable, it is easy to forget to close the dustproof setting, which may cause the charger to be damaged by dust or liquid. UTILITY MODEL CONTENT

[0004] To solve the above problems, the utility model provides a kind of vehicle-mounted concealed USB charging interface module, which is improved to make the vehicle-mounted USB charging module more flexible.

[0005] The technical scheme of the vehicle-mounted concealed USB charging interface module provided by the present application is as follows:

[0006] A kind of vehicle-mounted concealed USB charging interface module:

[0007] It comprises a charging module and a dustproof device.

[0008] The charging module is a USB charging module, which is provided with at least one group of USB interfaces at the top, and the charging module is connected to the vehicle-mounted power supply to charge the equipment to be charged.

[0009] The dustproof device is installed on the top of the charging module, and is used for sealing the USB interface;

[0010] The dustproof device comprises an induction unit and an automatic sealing unit.

[0011] The automatic sealing unit comprises an operating component and a sealing plate, the sealing plate is symmetrically arranged, and the induction unit controls the operating component to open and close the sealing plate.

[0012] As an improvement, the induction unit comprises an infrared sensor and a Hall sensor.

[0013] The infrared sensor starts the operating component through human body contact induction, and the sealing plate is opened through the operation of the operating component.

[0014] The Hall sensor senses the corresponding sealing plate and identifies the on-off state of the USB interface.

[0015] As an improvement, the operating component comprises a gear, a gear disc and a motor, a plurality of teeth A are arranged on the periphery of the gear.

[0016] The gear disc is located on the top of the charging module, the gear disc is rotationally arranged, a plurality of teeth B are arranged on the inner ring of the gear disc, the teeth A and the teeth B are meshingly arranged, the inner ring of the gear disc extends inwardly to form an arc-shaped groove, and the arc-shaped groove is symmetrically arranged along the central axis of the gear disc.

[0017] The motor is located below the gear, the motor drives the gear, and the gear disc rotates through the gear.

[0018] As an improvement, a cylindrical protrusion is arranged on the sealing plate, the cylindrical protrusion is arranged in the arc-shaped groove, and the sealing plate is driven to slide through the arc-shaped groove during the rotation of the gear disc.

[0019] As an improvement, a ball is protrusively arranged at the lower end of the gear disc.

[0020] The top of the charging module is further provided with a rotating groove, the ball slides through the rotating groove, the cross section of the rotating groove is shaped according to the ball, and the rotating groove and the ball are limitingly arranged in interlocking mode.

[0021] As an improvement, a spherical recess is further arranged in the rotating groove, and the spherical recess accommodates the ball to penetrate into the rotating groove.

[0022] As an improvement, a sliding groove is arranged beside the sealing plate, and the sealing plate moves through the sliding groove.

[0023] As an improvement, the Hall sensor is located on the sliding path of the sealing plate, and the Hall sensor can also identify the USB interface switch state by sensing the sealing plate.

[0024] As an improvement, a cover is arranged on the dustproof device, and the cover is used for covering the internal structure of the dustproof device and fixing the dustproof device.

[0025] As an improvement, a circular hole is arranged on the cover.

[0026] As an improvement, the sensing head of the infrared sensor is exposed to the cover and is arranged in the circular hole of the cover.

[0027] The beneficial effects of the utility model lie in:

[0028] The utility model relates to a vehicle-mounted concealed USB charging interface module, which is improved by arranging an induction unit and an automatic sealing unit in the dustproof device, sealing the USB interface by the automatic sealing unit, avoiding dust accumulation or water inflow, protecting the main body, controlling the opening and closing state of the automatic sealing unit by the induction unit, facilitating the connection of the charger and preventing dust or water inflow caused by forgetting to cover the dust cover after pulling out the charger, allowing the driver to use the product flexibly, automatically converting according to the situation, keeping the environment clean for some high-precision charging chips and circuits, and better meeting the charging demand.

[0029] In conclusion, the utility model discloses a vehicle-mounted concealed USB charging interface module, which is more dustproof and waterproof, safe and convenient in use compared with the prior art. ACCREDITATION OF DRAWINGS

[0030] Figure 1 It is the internal structure diagram of the utility model Figure 1 ;

[0031] Figure 2 It is the internal structure diagram of the utility model Figure 2 ;

[0032] Figure 3 It is the internal structure diagram of the utility model Figure 3 ;

[0033] Figure 4 It is the three-dimensional structure diagram of the utility model

[0034] Figure 5 It is the cover structure diagram of the utility model

[0035] Figure 6The utility model discloses gear disc structure schematic diagram shows.

[0036] Figure 7 The utility model discloses plane structure schematic diagram shows.

[0037] Figure 8 The utility model discloses circuit principle schematic diagram shows.

[0038] In the drawing, 1, charging module, 11, USB interface, 2, dustproof device, 3, induction unit, 31, infrared inductor, 311, induction head, 32, hall inductor, 4, automatic sealing unit, 41, operation part, 411, gear, 412, gear disc, 413, motor, 414, tooth A, 415, tooth B, 416, arc slot, 417, sphere, 418, boss, 42, sealing plate, 421, cylindrical lug, 422, sliding groove, 5, rotation groove, 51, spherical recess, 6, cover, 61, round hole groove, 62, square recess. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the utility model.

[0040] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0041] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0042] Embodiment 1:

[0043] As Figures 1 to 8As shown, a kind of vehicle-mounted concealed USB charging interface module:

[0044] Including charging module 1 and dustproof device 2;

[0045] The charging module 1 is USB charging module, and the top of the charging module 1 is provided with at least one group of USB interface 11, and the charging module 1 is connected to vehicle power supply to charge the device to be charged;

[0046] The dustproof device 2 is installed on the top of the charging module 1, and the dustproof device 2 is used to seal the USB interface 11;

[0047] The dustproof device 2 includes sensing unit 3 and automatic sealing unit 4;

[0048] The automatic sealing unit 4 includes operating component 41 and sealing plate 42, the sealing plate is symmetrically arranged, and the sensing unit 3 controls the operating component 41 to open and close the sealing plate 42;

[0049] The sensing unit 3 includes infrared sensor 31 and hall sensor 32;

[0050] The infrared sensor 31 starts the operating component 41 by human contact sensing, and the sealing plate 42 is opened by the operation of the operating component 41;

[0051] The hall sensor 32 senses the corresponding sealing plate 42, identifies the switch state of the USB interface 11, and the sealing plate 42 is provided with a sliding groove 422, the sealing plate 42 moves through the sliding groove 422, the hall sensor 32 is located on the sliding path of the sealing plate 42, and the hall sensor 32 can also identify the switch state of the USB interface 11 by sensing the sealing plate 42.

[0052] Specifically, when the vehicle-mounted USB charging module works, the user first moves the USB plug to the infrared sensor 31, the infrared sensor 31 senses the human body, and after the infrared sensor 31 senses the human body, the corresponding control chip is started, the operating component 41 is started, the sealing plate 42 is opened, the internal USB interface 11 is exposed, and then the user inserts the USB plug into the USB interface 11, and the vehicle-mounted USB charging module starts working.

[0053] Further, a detection circuit for detecting whether the USB plug is inserted is arranged on the charging circuit of the USB interface 11, and the working principle of the detection circuit is as follows:

[0054] Connect a pull-up resistor to the power supply on the D+ or D- data line of the USB interface, and connect a pull-down resistor to the ground on the data line. When no USB connector is inserted, the data line is pulled low by the pull-down resistor; when the USB connector is inserted, the pull-up resistor at the device end will raise the level of the data line, and the level change is detected to determine whether a USB device is inserted.

[0055] The specific connection mode of the detection circuit is as follows:

[0056] Taking the D+ line as an example, one end of a 1.5kΩ pull-up resistor is connected to a 3.3V power supply, and the other end is connected to the D+ pin of the USB interface. At the same time, one end of a 15kΩ pull-down resistor is connected to the D+ pin of the USB interface, and the other end is grounded.

[0057] The detection process is as follows:

[0058] When the USB is not inserted, the D+ pin is grounded through the 15kΩ pull-down resistor, and the level is low. After inserting the USB device, if the device is a full-speed or high-speed device, its internal circuit will pull up the D+ pin through the 1.5kΩ pull-up resistor, so that the inserted USB plug is detected by the host chip.

[0059] In addition, as shown in Figure 8 The circuit structure of the automatic dustproof function vehicle-mounted USB charging module includes a charging power circuit module for controlling the charging power of the USB interface 11, an intelligent control circuit module for controlling the sensing unit 3, and a protection power circuit module for protecting the charging power circuit module and the intelligent control circuit module.

[0060] Among them, the intelligent control circuit module of the sensing unit is described as follows:

[0061] The sensing unit 3 is composed of an infrared sensor 31 and a Hall sensor 32, and the infrared sensor 31 and the Hall sensor 32 are controlled by a control chip. The control chip in this application is preferably an STM32F103C8T6 chip. The STM32F103C8T6 chip is powered by a vehicle-mounted power supply system, which usually converts the vehicle-mounted power supply (such as 12V) into a 3.3V or 5V power supply that the chip can accept through a power conversion circuit. After the chip is powered on, a series of initialization operations will be performed, including setting the internal clock source and initializing the general input / output pin (GPIO).

[0062] The infrared sensor 31 can be an infrared pyroelectric sensor (such as HC-SR501), and its output pin is connected to a GPIO pin (set as PA0) of the STM32F103C8T6. The sensor detects the infrared emitted by the human body to determine whether a user is holding the USB connector close. When the user is close, the HC-SR501 sensor outputs a high-level signal. The STM32F103C8T6 chip detects the level change of the PA0 pin through internal interrupt mechanism or polling mode. If a high level is detected, the chip determines that a person is close, and then triggers the corresponding control program. The control program can send an opening signal to the operating component 41. After receiving the signal, the operating component 41 operates to open the sealing plate 42, exposing the internal SUB interface 11.

[0063] The other group of Hall sensors 32 functions to determine whether the sealing plate 42 is properly opened or closed when the operating component 41 opens or closes the sealing plate 42, and also functions to determine the opening or closing state of the sealing plate 42 when the car is restarted after being turned off.

[0064] Specifically, the Hall sensor is preferably A3144, and a small magnet is installed at the maximum opening position and the closed position of the sealing plate 42 (i.e., at the two ends of the sliding direction of the sealing plate 42 in this application), and the Hall sensor is installed on the USB interface body (e.g., in this application, the Hall sensor is installed on the sliding path of the sealing plate 42). The output pin of the Hall sensor is connected to another GPIO pin (set as PB0) of the STM32F103C8T6.

[0065] When the sealing plate 42 is opened and reaches the set position, the magnet is close to the Hall sensor, and the output level of the Hall sensor changes (e.g., from high level to low level). After the STM32F103C8T6 chip detects the level change of the PB0 pin, it determines that the cover plate has been opened to the position. At this time, the chip can be set according to the program, such as stopping the operation of the motor drive circuit to prevent the cover plate from being opened too much, and at the same time, an indicator light can be lit to indicate that the USB interface is available.

[0066] In addition, the STM32F103C8T6 chip is connected to a motor drive chip (such as L298N) through another set of GPIO pins (such as PA1-PA3) to control the opening and closing of the sealing plate 42 of the USB interface. When the human body sensing sensor detects that someone is close and triggers an opening signal, the STM32F103C8T6 chip will send a control pulse signal to the L298N motor drive chip through the PA1-PA3 pins, so that the motor rotates, thereby opening the sealing plate of the USB interface. During the opening of the sealing plate, the position information of the sealing plate is fed back through the sealing plate position sensing sensor until the sealing plate is opened to the right position, and the motor stops rotating. Similarly, when use is completed, the chip can control the motor to reverse and close the sealing plate of the USB interface.

[0067] Furthermore, the charging power circuit module for controlling the charging power of the USB interface 11 is described as follows:

[0068] The charging power circuit module includes a power input part, a rectification and filtering part, a DC-DC conversion part, a charging management part, and a USB interface part.

[0069] Specifically, the power input part is a vehicle-mounted power supply, generally a vehicle-mounted 12V or 24V DC power supply, which serves as the energy source of the entire circuit. The positive electrode of the power supply is connected to the positive electrode of the input end of the subsequent circuit, and the negative electrode is connected to the input negative electrode.

[0070] The rectification and filtering part includes rectification diodes and filtering capacitors. The rectification diodes usually use low-frequency diodes such as 1N4007 to convert the alternating current of the automobile power supply into direct current. Multiple diodes can form a bridge rectification circuit, and the connection mode is as follows: the anodes of two diodes are connected to the positive and negative electrodes of the power input, respectively, and the cathodes are connected together as the rectified direct current positive electrode output; the cathodes of the other two diodes are connected to the positive and negative electrodes of the power input, respectively, and the anodes are connected together as the rectified direct current negative electrode output. The filtering capacitors generally use electrolytic capacitors, such as 1000μF / 25V, to filter out the ripple components in the rectified direct current voltage, making the output voltage more smooth and stable. The positive electrode of the capacitor is connected to the rectified direct current positive electrode, and the negative electrode is connected to the direct current negative electrode.

[0071] The DC-DC conversion part includes a DC / DC converter chip, an inductor and an output filter capacitor. The DC / DC converter chip such as TILM25117-Q1 is a core control element of the power circuit, which converts the input DC voltage into a stable DC voltage suitable for USB charging according to the set parameters, and provides various protection functions. The connection mode is as follows: the positive electrode of the power input end is connected to the input pin of the chip, and the negative electrode is connected to the ground pin of the chip; the output pin of the chip is connected to the positive electrode of the subsequent circuit, and the ground pin of the chip is connected to the negative electrode of the power supply; the inductor is used in cooperation with the DC / DC converter chip to store and release energy when the switching tube is turned on and turned off, thereby playing a role in smoothing current and stabilizing voltage. One end of the inductor is connected to the output pin of the DC / DC converter chip, and the other end is connected to the positive electrode of the output filter capacitor and the USB interface. The output filter capacitor is generally a ceramic capacitor or a tantalum capacitor, which together with the inductor forms an LC filter circuit to further filter out the ripple and high-frequency noise in the output voltage, thereby improving the stability of the output voltage. The positive electrode of the capacitor is connected to the output end of the inductor and the positive electrode of the USB interface, and the negative electrode is connected to the negative electrode of the power supply.

[0072] The charging management part includes an electric management chip and a current detection resistor. The electric management chip such as TPS2546-Q1 is responsible for controlling the USB charging process, including detecting the type of charging device, negotiating the charging current and voltage, providing overcurrent protection and other functions. The connection mode is as follows: the positive electrode of the power input end is connected to the power pin of the chip, and the negative electrode is connected to the ground pin of the chip; the output pin of the chip is connected to the positive electrode of the USB interface, and the ground pin of the chip is connected to the negative electrode of the power supply; the USB data pin (D+, D-) of the chip is connected to the corresponding data pin of the USB interface, and the current detection resistor is used to detect the size of the charging current to enable the charging management chip to perform overcurrent protection and other controls. The resistor is connected in series in the charging loop, one end is connected to the current detection pin of the charging management chip, and the other end is connected to the negative electrode of the USB interface.

[0073] The USB interface part, i.e. the USB interface 11 in this paper, is the connection interface of the charging device, and the pin definition is as follows: pin 1 is the positive electrode of the power supply, connected to the output positive electrode of the DC-DC converter and the output pin of the charging management chip; pin 4 is the negative electrode of the power supply, connected to the current detection resistor and the negative electrode of the power supply; pins 2 and 3 are USB data pins, connected to the D+ and D- pins of the charging management chip respectively.

[0074] In addition, the protection power circuit module for protecting the charging power circuit module and the intelligent control circuit module is described as follows:

[0075] The protection power circuit module comprises a fuse and a TVS diode, the fuse is like a self-recovery fuse, when overcurrent failure occurs in the circuit, the fuse will automatically cut off the circuit to protect other components from being damaged. The fuse is connected in series in the power supply input loop, one end is connected to the positive pole of the automobile power supply, and the other end is connected to the input positive pole of the subsequent circuit; the TVS diode is used to prevent the surge voltage and electrostatic discharge in the circuit from damaging the components. The cathode of the TVS diode is connected to the positive pole of the power supply input or other lines that need to be protected, and the anode is connected to the negative pole of the power supply.

[0076] Embodiment 2:

[0077] Embodiment 2 of the utility model is different from embodiment 1 in that:

[0078] As shown in Figure 1 , Figure 5 and Figure 6 , the operating component 41 comprises a gear 411, a gear disc 412 and a motor 413, a plurality of teeth A 414 are uniformly arranged on the periphery of the gear 411;

[0079] The gear disc 412 is located at the top of the charging module 1, the gear disc 412 is rotationally arranged, a plurality of teeth B 415 are arranged on the inner ring of the gear disc 412, the teeth A 414 and the teeth B 415 are meshingly arranged, the inner ring of the gear disc 412 extends inwardly to form an arc-shaped groove 416, and the arc-shaped groove 416 is symmetrically arranged along the central axis of the gear disc 412.

[0080] The motor 413 is located below the gear 411, the motor 413 is controlled by an STM32F103C8T6 chip, the motor 413 drives the gear 411, and the gear disc 412 rotates through the gear 411.

[0081] The sealing plate 42 is provided with a cylindrical protrusion 421, the cylindrical protrusion 421 penetrates the arc-shaped groove 416, and the sealing plate 42 slides through the arc-shaped groove 416 during the rotation of the gear disc 412.

[0082] Further, the gear disc 412 is provided with a spherical body 417 protruding downward at the lower end;

[0083] The top of the charging module 1 is further provided with a rotating groove 5, the spherical body 417 slides through the rotating groove 5, the cross section of the rotating groove 5 is shaped according to the spherical body 417, and the rotating groove 5 and the spherical body 417 are limitingly arranged in a clamping manner.

[0084] When installing, the rotating groove 5 is further provided with a spherical groove 51, which accommodates the ball 417 to penetrate into the rotating groove 5. After the ball 417 penetrates into the spherical groove 51, the gear disc 412 is rotated, and the gear disc 412 and the rotating groove 5 are installed. The gear disc 412 is provided with a ring-shaped boss 418 on the end face where the ball 417 is arranged. After the gear disc 412 and the rotating groove 5 are installed, the boss 418 is clamped on the ring-shaped opening at the top of the rotating groove 5.

[0085] Further, the outer cover 6 is further provided with a square groove 62 in the middle, which is used for sealing the USB interface 11 after the sealing plate 42 is opened.

[0086] Further, the outer cover 6 is further provided with a square groove 62 in the middle, which is used for sealing the USB interface 11 after the sealing plate 42 is opened.

[0087] Further, the outer cover 6 is further provided with a square groove 62 in the middle, which is used for sealing the USB interface 11 after the sealing plate 42 is opened.

[0088] The above only describes the preferred embodiments of the present application, and does not limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A kind of vehicle-mounted concealed USB charging interface module, it is characterized in that: Including charging module (1) and dustproof device (2); The charging module (1) is USB charging module, and the top of the charging module (1) is provided with at least one group of USB interface (11), and the charging module (1) is connected to vehicle power supply to charge the device to be charged; The dustproof device (2) is installed on the top of the charging module (1), and the dustproof device (2) is used to seal the USB interface (11); The dustproof device (2) includes sensing unit (3) and automatic sealing unit (4); The automatic sealing unit (4) includes operating component (41) and sealing plate (42), the sealing plate is symmetrically arranged, and the sensing unit (3) controls the operating component (41) to open and close the sealing plate (42).

2. According to the vehicle-mounted concealed USB charging interface module of claim 1, it is characterized in that: The sensing unit (3) includes infrared sensor (31) and hall sensor (32); The infrared sensor (31) is started by human contact sensing to operate the operating component (41), and the sealing plate (42) is opened by the operating component (41) after running; The hall sensor (32) senses the corresponding sealing plate (42), and identifies the switch state of the USB interface (11).

3. According to the vehicle-mounted concealed USB charging interface module of claim 2, it is characterized in that: The operating component (41) includes gear (411), gear disc (412) and motor (413), and a plurality of teeth A (414) are uniformly arranged on the periphery of the gear (411); The gear disc (412) is located on the top of the charging module (1), the gear disc (412) is rotationally arranged, a plurality of teeth B (415) are arranged on the inner ring of the gear disc (412), the teeth A (414) and the teeth B (415) are arranged in meshing, the inner ring of the gear disc (412) extends to be provided with an arc-shaped groove (416) inward, and the arc-shaped groove (416) is symmetrically arranged along the central axis of the gear disc (412); The motor (413) is located below the gear (411), the motor (413) drives the gear (411), and the gear disc (412) rotates through the gear (411).

4. According to the vehicle-mounted concealed USB charging interface module of claim 3, it is characterized in that: The sealing plate (42) is provided with a cylindrical protrusion (421), the cylindrical protrusion (421) is arranged in the arc-shaped groove (416), and the sealing plate (42) is driven to slide by the arc-shaped groove (416) in the rotating process of the gear disc (412).

5. According to the vehicle-mounted concealed USB charging interface module of claim 4, it is characterized in that: The lower end of the gear disc (412) is provided with a spherical body (417) which is protruded downward. The charging module (1) top is further provided with a rotating groove (5), the ball (417) slides through the rotating groove (5), the cross section of the rotating groove (5) is shaped with the ball (417), the rotating groove (5) and the ball (417) are limitedly arranged.

6. The vehicle-mounted hidden USB charging interface module according to claim 5, characterized in that: The rotating groove (5) is further provided with a spherical groove (51), which accommodates the ball (417) penetrating into the rotating groove (5).

7. The vehicle-mounted hidden USB charging interface module according to claim 5, characterized in that: The sealing plate (42) is provided with a sliding groove (422) beside it, and the sealing plate (42) moves through the sliding groove (422).

8. The vehicle-mounted hidden USB charging interface module according to claim 5, characterized in that: The Hall inductor (32) is located on the sliding path of the sealing plate (42), and the Hall inductor (32) can also identify the USB interface (11) switch state by inducting the sealing plate (42).

9. The vehicle-mounted hidden USB charging interface module according to claim 5, characterized in that: It comprises an outer cover (6), which is installed on the dustproof device (2), and is used to cover the internal structure of the dustproof device (2) and fix the dustproof device (2); The outer cover (6) is provided with a circular hole groove (61); The sensing head (311) of the infrared inductor (31) is exposed to the outer cover (6), and the sensing head (311) is arranged in close contact with the circular hole groove (61) on the outer cover (6).

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