CN222690160U - Vehicle-mounted USB box - Google Patents
Vehicle-mounted USB box Download PDFInfo
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- CN222690160U CN222690160U CN202420541602.7U CN202420541602U CN222690160U CN 222690160 U CN222690160 U CN 222690160U CN 202420541602 U CN202420541602 U CN 202420541602U CN 222690160 U CN222690160 U CN 222690160U
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Abstract
The embodiment of the utility model relates to a vehicle-mounted USB box. The vehicle-mounted USB box comprises a shell part, a circuit board, a data connector, a card reader, a TF card, a USB card reader chip and a USB card reader chip, wherein an accommodating space is formed in the shell part, the circuit board is accommodated in the accommodating space, the circuit board is provided with the data connector which is away from each other and extends in the direction away from the circuit board, the card reader is provided with the TF card slot, the TF card is connected to the card reader and is accommodated in the TF card slot and used for storing data information, the USB card reader chip is arranged on the circuit board, one part of the USB card reader chip is connected to the card reader, and the other part of the USB card reader chip is connected with a vehicle body through the data connector, so that the data information is mutually transmitted between the vehicle body and the card reader. Through the design of adding the card reader, the USB card reader chip and the data connector, the data information processed by the vehicle-mounted device can be stored in the TF card, and the data information in the TF card can be read to the vehicle-mounted device, so that the vehicle-mounted device can be read and checked.
Description
Technical Field
The utility model relates to the technical field of vehicle-mounted USB boxes, in particular to a vehicle-mounted USB box of a USB card reader data storage application circuit, which is applied to a data storage function and a video playback function of a camera on a new energy vehicle.
Background
With the development of technology, cameras or automobile data recorders are increasingly used in new energy vehicles. However, such a lot of video data requires a storage device to store the data information collected by the camera or the automobile data recorder. The simplest and highest cost performance method is to connect a large capacity TF card (Transflash, also called as T-Flash card, which is a small Flash memory card) to store related data information, so that a card reader supporting USB2.0 (Universal Serial Bus, which is a universal serial bus) is needed, video shot by a camera or a vehicle recorder can be compressed by the vehicle and then transmitted to the TF card for storage through USB data, and if the video is required to be called back, the video can be played back by the vehicle.
Disclosure of utility model
The utility model provides a vehicle-mounted USB box, which aims to solve the technical problems that after being processed by a vehicle camera or a vehicle recorder, data information of a new energy vehicle is stored by a card reader, and after being processed by the card reader, the data information stored in a TF card is read on the vehicle camera.
The utility model provides a vehicle-mounted USB box. The vehicle-mounted USB box comprises:
The shell part is internally provided with an accommodating space;
The card reader comprises a circuit board, a data connector, a card reader and a card storage device, wherein the circuit board is accommodated in the accommodating space, and the circuit board is provided with a data connector which is mutually away from and extends in a direction away from the circuit board, and the card reader is provided with a TF card slot;
The TF card is connected to the card reader and is accommodated in the TF card slot for storing data information;
The USB card reader chip is arranged on the circuit board, one part of the USB card reader chip is connected with the card reader, and the other part of the USB card reader chip is connected with the car machine through the data connector so that the data information is mutually transmitted between the car machine and the card reader.
In some embodiments, the housing component comprises:
the mounting shell comprises a base body and a retaining plate, wherein the retaining plate is covered at one end of the base body;
The cover body comprises a base plate and a clamping hook, wherein the clamping hook protrudes out of the surface of the base plate;
The mounting shell is mutually connected with the cover body through mutual matching between the bayonet and the clamping hook so as to form the accommodating space in a surrounding way;
the card reader comprises a card reader, a data connector, a base plate, a card holder, a card storage space, a card storage device and a data connector, wherein the card holder is provided with a through TF card jack, a through hole is formed in the base plate, at least one part of the card reader is stored in the TF card jack, and at least one part of the data connector penetrates through the through hole and extends out of the storage space.
In some embodiments, the catch comprises:
the clamping device comprises an elastic part, a clamping protrusion, a clamping groove and a clamping groove, wherein the clamping protrusion is matched with the bayonet;
The elastic part is provided with elastic force for driving the clamping protrusion to be clamped with the bayonet, and when the elastic force is provided by the elastic part, the clamping protrusion is driven to enter the bayonet so as to limit the mutual movement between the mounting shell and the cover body.
In some embodiments, the data connector comprises:
The USB card reader comprises a plurality of connecting terminals, a plurality of connecting pins, a plurality of USB card reader chips, a plurality of USB card readers and a plurality of USB card readers, wherein the connecting pins are correspondingly connected with the connecting terminals and are connected with the USB card reader chips;
The metal shell can be used as a GND pin of the connection pin to form a ground.
In some embodiments, the in-vehicle USB box further comprises:
The power chip comprises an IN pin and an OUT pin;
The connecting terminal comprises a POWER+ terminal and a POWER-terminal which are both connected with the vehicle so that the data connector forms a POWER SIGNAL;
the USB card reader chip comprises a DM pin serving as a reverse signal transmission end, a DP pin serving as a forward signal transmission end, a D3V3 pin serving as a digital power input end and an A3V3 pin serving as an analog power input end;
The connecting pins comprise a VBUS pin, a D+ pin and a D-pin, wherein the VBUS pin is respectively connected with the POWER+ terminal and the POWER-terminal and is connected with an IN pin, and a first voltage signal is formed on the POWER chip IN response to the POWER signal;
The D+ pin is respectively connected with the signal+ terminal and the DP pin, and the D-pin is respectively connected with the SIGNAL-terminal and the DM pin, so that differential transmission is formed between the USB card reader chip and the vehicle.
In some embodiments, the USB card reader chip includes:
The SD_D0 pin, the SD_D1 pin, the SD_D2 pin and the SD_D3 pin are all used for transmitting the data information stored in the TF card, and the SD_CMD pin is used as an instruction transmitting end, the SD_VCC pin is used as a voltage output end, the SD_CLK pin is used for providing a clock signal and the SD_CDZ pin is used for detecting whether the TF card is inserted or not;
The card reader comprises a DAT0 pin, a DAT1 pin, a DAT2 pin, a DAT3 pin, a CMD pin serving as an instruction receiving end, a VDD pin serving as a voltage input end, an SD_CD pin and a CLK pin for receiving a clock signal;
The DAT0 pin is connected with the SD_D0 pin, the DAT1 pin is connected with the SD_D1 pin, the DAT2 pin is connected with the SD_D2 pin, and the DAT3 pin is connected with the SD_D3 pin, so that the data information can be mutually transmitted between the TF card and the USB card reader chip;
The CMD pin is connected with the SD_CMD pin, the SD_CD pin is connected with the SD_CDZ pin, the VDD pin is connected with the SD_VCC pin so that the second voltage signal is transmitted to the TF card, and the CLK pin is connected with the SD_CLK pin.
In some embodiments, the data connector, the power chip, the USB card reader chip and the card reader cooperate to form a data storage application circuit, the data storage application circuit comprising:
the first ESD protection component and the second ESD protection component are arranged between the data connector and the USB card reader chip;
the third ESD protection component and the fourth ESD protection component are arranged between the USB card reader chip and the card reader;
The power chip is connected to the D3V3 pin and the A3V3 pin, and the common mode inductor is connected to the DM pin and the D-pin respectively.
In some embodiments, the first ESD protection component comprises:
A first ESD protection member and a second ESD protection member; one end of the first ESD protection piece is respectively connected with the D-pin and the common mode inductor, and the other end of the first ESD protection piece is grounded;
Wherein one end of the second ESD protection component is connected to the VBUS pin, and the other end is grounded.
In some embodiments, the third ESD protection component comprises:
a third ESD protection member, a fourth ESD protection member, and a fifth ESD protection member;
One end of the third ESD protection piece is respectively connected with the SD_D2 pin and the DAT2 pin, the other end of the third ESD protection piece is grounded, one end of the fourth ESD protection piece is respectively connected with the SD_D3 pin and the DAT3 pin, the other end of the fourth ESD protection piece is grounded, and one end of the fifth ESD protection piece is respectively connected with the SD_CMD pin and the CMD pin, and the other end of the fifth ESD protection piece is grounded.
In some embodiments, the fourth ESD protection component comprises:
A sixth ESD protection member, a seventh ESD protection member, an eighth ESD protection member, a ninth ESD protection member, and a tenth ESD protection member;
One end of the sixth ESD protection piece is respectively connected with the SD_D0 pin and the DAT0 pin, the other end of the sixth ESD protection piece is grounded, one end of the seventh ESD protection piece is respectively connected with the SD_D1 pin and the DAT1 pin, the other end of the seventh ESD protection piece is grounded, one end of the eighth ESD protection piece is respectively connected with the SD_CDZ pin and the SD_CD pin, the other end of the eighth ESD protection piece is grounded, one end of the ninth ESD protection piece is respectively connected with the SD_VCC pin and the VDD pin, the other end of the ninth ESD protection piece is grounded, and one end of the tenth ESD protection piece is respectively connected with the SD_CLK pin and the CLK pin, and the other end of the eighth ESD protection piece is grounded.
Preferably, the vehicle machine is arranged on the new energy vehicle, is connected with a vehicle-mounted power supply on the new energy vehicle, and is also connected with a vehicle-mounted camera or a vehicle recorder arranged on the new energy vehicle.
The vehicle-mounted USB box comprises a vehicle-mounted USB box body, a vehicle-mounted USB box, a locking piece, a locking groove, a data connector and a data connector, wherein the vehicle-mounted USB box body is provided with a jack matched with the data connector of the vehicle-mounted USB box, and the inner surface of the jack is provided with the locking groove matched with the locking piece of the vehicle-mounted USB box;
In addition, the data information of the camera is transmitted to a USB card reader chip of the vehicle-mounted USB box through the data connector after being processed by the vehicle-mounted machine, is transmitted to a card reader of the vehicle-mounted USB box after being processed by the USB card reader chip and is stored in a TF card of the vehicle-mounted USB box, or the data information stored in the TF card is transmitted to the USB card reader chip through the card reader, is transmitted to the data connector after being processed and is read on the vehicle-mounted machine.
The vehicle-mounted USB box has the advantages that the novel vehicle-mounted USB box is provided, and through the design of the card reader, the USB card reader chip and the data connector, data information processed by the vehicle-mounted USB box can be stored in the TF card, and the data information in the TF card can be read to the vehicle-mounted USB box.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to scale, unless expressly stated otherwise.
FIG. 1 is a schematic diagram of a vehicle-mounted USB box according to an embodiment of the present utility model;
FIG. 2 is an exploded view of a vehicle-mounted USB box according to an embodiment of the present utility model;
FIG. 3 is a functional block diagram of a vehicle-mounted USB box provided by an embodiment of the present utility model;
FIG. 4 is a schematic circuit diagram of a vehicle-mounted USB box provided by an embodiment of the present utility model;
FIG. 5 is a schematic circuit diagram of the data storage application circuit provided in FIG. 4, associated with a data connector;
FIG. 6 is a schematic circuit diagram of the data storage application circuit provided in FIG. 4, in relation to a USB card reader chip;
FIG. 7 is a schematic circuit diagram of the data storage application circuit provided in FIG. 4, in connection with a card reader.
The USB card comprises the following components of 100, a vehicle-mounted USB box, 1, a shell part, 11, a mounting shell, 12, a cover body, 111, a base body, 112, a retaining plate, 121, a base plate, 122, a clamping hook, 1111, a bayonet, 1112, a locking piece, 1121, a TF card jack, 1122, a TF card pressing part, 1221, an elastic part, 1222, a clamping protrusion, 1231, a through hole, 2, a circuit board, 3, a data connector, 31, a connecting terminal, 32, a metal shell, 311, a POWER+ terminal, 312, a POWER-terminal, 313, S I GNAL + terminal, 314, S I GNAL-terminal, 4, a card reader, 41, a TF card slot, 5, a USB card reader chip, 6, a car machine and 7, and a POWER chip.
Detailed Description
The utility model will now be described in detail with reference to specific embodiments, it being emphasized that the following description is merely exemplary in nature and is in no way intended to limit the scope of the utility model or its applications.
It is noted that unless explicitly specified and limited otherwise, the terms "inner", "outer", "away from", "approaching", "projecting" and the like used in this specification refer to an orientation or a positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. The terms "mounted," "connected," "secured," and the like are to be construed broadly, as they are, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, or indirectly connected via an intervening medium. Furthermore, the terms "first," second, "" third, "" fourth, "" seventh, "" eighth, "" ninth, "" tenth "are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance or implying any particular amount of such technical features, whereby features defining" first, "" second, "" third, "" fourth, "" seventh, "" eighth, "" ninth, "" tenth "may explicitly or implicitly include one or more such features, the meaning of" plurality "is two or more, and/or" any and all combinations of one or more of the associated listed items.
The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In this embodiment, the specific shape, structure, size, etc. of the "vehicle-mounted USB box" are not limited, and any suitable implementation manner may be selectively used by those skilled in the art according to actual situation needs.
Fig. 1 is a schematic structural diagram of a vehicle-mounted USB box according to an embodiment of the present utility model. Fig. 2 is an exploded view of a vehicle-mounted USB box according to an embodiment of the present utility model. Fig. 3 is a functional block diagram of a vehicle-mounted USB box provided by an embodiment of the present utility model.
Referring to fig. 1-3, the vehicle-mounted USB box 100 includes a housing part 1, a circuit board 2, a TF card (Transflash, also referred to as a T-Flash card, which is a compact Flash memory card), a data connector 3, a card reader 4, and a USB card reader chip 5.
In the embodiment of the application, a TF card can be connected inside and outside the TF card slot 41 of the card reader 4, and used for storing data information (for example, video information) acquired by a camera of a new energy automobile, or the data information stored on the TF card can be reviewed through the automobile 6 (namely, a video playback function is realized), wherein the TF card slot 41 can support a TF card of 8-128 gb, the TF card supports the speed grades of U1, U3 and class10, the transmission rate is not less than 10MB/s, and the card reader supports the data transmission of USB 2.0.
Specifically, the TF card adopts a flash memory technology, which is used for expanding the storage capacity of devices, such as mobile phones, cameras, tablet computers, and the like. The TF card has a compact shape. The TF card has fast read-write speed, high stability and reliability, and supports hot plug. By inserting the TF card into the TF card slot of the device, the user can store and transmit various data (e.g., photos, music, videos, documents) on the device.
It should be noted that U1, U3 and Class 10 each represent the lowest sequential write speed of the memory card and thus can be used to evaluate the performance of the memory card in processing large files, high definition video recording and continuous shooting, where U1 and U3 are speed rating criteria for SD cards (Secure DIGITAL CARD), specifically U1 represents the lowest write speed of 10MB/s and U3 represents the lowest write speed of 30MB/s, and additionally Class 10 is the speed rating criteria for SD cards and microSD cards (MicroSecure DIGITAL CARD), specifically Class 10 represents the lowest write speed of 10MB/s.
The housing member 1 has an accommodating space formed therein, the circuit board 2 is accommodated in the accommodating space, and the circuit board 2 is provided with a data connector 3 which is away from each other and extends in a direction away from the circuit board 2, and a card reader 4 having a TF card slot 41.
The TF card is connected to the card reader 4, and is accommodated in the TF card slot 41 to store data information.
It should be noted that the USB card reader chip 5 is disposed on the circuit board 2, wherein a part of the USB card reader chip is connected to the card reader 4, and the other part of the USB card reader chip is connected to the car machine 6 through the data connector 3, so that the above data information is transmitted between the car machine 6 and the card reader 4.
In some embodiments, as shown in FIGS. 1-2, the housing component 1 includes a mounting shell 11 and a cover 12.
It will be appreciated that the mounting housing 11 includes a base 111 and a retaining plate 112.
Specifically, the retaining plate 112 is disposed at one end of the base 111, and a bayonet 1111 is formed at an end of the base 111 away from the retaining plate 112.
The cover 12 includes a base 121 and a hook 122.
The hook 122 protrudes from the surface of the substrate 121, and the mounting case 11 is connected to the cover 12 by the engagement between the bayonet 1111 and the hook 122 to form a housing space.
The holding plate 112 is provided with a through-hole 1121 for a TF card, the substrate 121 is provided with a through-hole 1231, at least a part of the card reader 4 is accommodated in the TF card hole 1121, and at least a part of the data connector 3 extends out of the accommodation space through the through-hole 1231.
Specifically, the holding plate is provided with a TF card pressing portion 1122 in the vicinity of the TF card insertion hole 1121, and when the TF card pressing portion 1122 is pressed, the TF card accommodated in the TF card slot 41 can be ejected to take out the TF card.
In some embodiments, as can be seen in FIGS. 1-2, the catch 122 includes a resilient portion 1221 and a snap tab 1222.
It should be noted that the engaging protrusion 1222 is matched with the bayonet 1111, one end of the elastic portion 1221 protrudes from the surface of the substrate 121, and the engaging protrusion 1222 is disposed at one end of the elastic portion 1221 away from the substrate 121.
It will be appreciated that the elastic portion 1221 has an elastic force for driving the engaging protrusion 1222 to engage with the bayonet 1111, and that the elastic portion 1221 provides an elastic force for driving the engaging protrusion 1222 into the bayonet 1111 to limit the mutual movement between the mounting case 11 and the cover 12.
Fig. 4 is a schematic circuit diagram of a vehicle-mounted USB box according to an embodiment of the present utility model. Fig. 5 is a schematic circuit diagram of the data storage application circuit provided in fig. 4, in relation to a data connector. FIG. 6 is a schematic circuit diagram of the data storage application circuit provided in FIG. 4, in relation to a USB card reader chip.
In some embodiments, as can be seen from fig. 2-6, the data connector 3 comprises a plurality of connection terminals 31, a metal housing 32, and a plurality of connection pins.
It should be noted that, the plurality of connection pins are correspondingly connected with the plurality of connection terminals 31 and are connected with the USB card reader chip 5, and the connection terminals 31 are connected with the car machine 6.
Specifically, the metal housing 32 may be a GND pin (Ground terminal) of a connection pin for providing a Ground or Ground connection of a circuit to form a Ground.
In some embodiments, referring to FIGS. 2-6, the in-vehicle USB box 100 further includes a power chip 7.
The power chip 7 includes an IN pin and an OUT pin.
Specifically, the IN pin is typically connected to an external power source (the IN pin is connected to the VBUS pin of the data connector 3; the external power source refers to a vehicle-mounted power source connected to the vehicle machine 6) for providing a desired operation voltage to the power chip 7, the IN pin receives the voltage from the external power source and transmits it to a circuit module inside the power chip 7 to ensure that the power chip 7 operates normally and generates a preset voltage suitable for a circuit or device connected to the OUT pin, wherein the OUT pin is connected to the D3V3 pin and the A3V3 pin of the USB card reader chip 5 for providing the preset voltage generated from the power chip 7 to the USB card reader chip 5, and the IN pin and the OUT pin function for providing a bidirectional voltage transmission function to the power chip 7 and the circuit or device connected to the power chip 7.
The connection terminals 31 include a power+ terminal 311 (POWER Plus for connecting to the positive electrode of the vehicle POWER supply), a POWER-terminal 312 (PowerMinus for connecting to the negative electrode of the vehicle POWER supply), a signal+ terminal 313 (SIGNAL Plus, positive electrode of SIGNAL transmission), and a SIGNAL-terminal 314 (SIGNAL Minus, negative electrode of SIGNAL transmission).
It should be noted that POWER + terminal 311 and POWER-terminal 312 are both connected to vehicle 6 such that data connector 3 forms a POWER SIGNAL, and SIGNAL + terminal 313 and SIGNAL-terminal 314 are both connected to vehicle 6.
It will be appreciated that the USB card reader chip 5 includes a DM pin ("DATA NEGATIVE, which refers to the negative pole of the differential signal pair, and may also be referred to as the N pin), a DP pin (Data Positive, which refers to the Positive pole of the differential signal pair, and may also be referred to as the P pin), a D3V3 pin (VDD 3V3, which refers to the digital power pin with a supply voltage of 3.3V, which is mainly used to provide a required operating voltage for the digital circuit in the USB card reader chip 5), and an A3V3 pin (AVDD 3V3, which refers to the analog power pin with a supply voltage of 3.3V, which is mainly used to provide a required operating voltage for the analog circuit in the USB card reader chip 5).
Specifically, the DM pin is used as a reverse signal transmission terminal, the DP pin is used as a forward signal transmission terminal, the D3V3 pin is used as a digital power input terminal, and the A3V3 pin is used as an analog power input terminal.
The connection pins include a VBUS pin (Voltage Bus, a pin for transmitting Voltage information), a D+ pin (Date Plus, a positive differential signal line), and a D-pin (Date Minus, a negative differential signal line), the VBUS pin is connected to the POWER+ terminal and the POWER-terminal 312, respectively, and to the IN pin, a first Voltage signal is formed on the POWER chip 7 IN response to a POWER signal, and the OUT pin is connected to the D3V3 pin and the A3V3 pin, respectively, and a second Voltage signal is formed on the USB card reader chip 5 IN response to the first Voltage signal.
Specifically, the USB device can perform two-way communication by sending voltage signals on the D+ pin and the D-pin, the D+ pin and the D-pin have a data transmission function, a handshake protocol function and a power supply function, the D+ pin and the D-pin are slightly different in use modes of USB2.0 and USB 3.0 standards, the vehicle-mounted USB box supports the USB2.0 standards, specifically, the data transmission function means that the voltage change on the D+ pin and the D-pin represents the transmitted binary data, high-speed and reliable data transmission can be realized, the handshake protocol means that the D+ pin and the D-pin are used for performing the handshake protocol between the devices to determine the start and the end of data transmission, and the power supply function means that the D+ pin and the D-pin can also be used for detecting and providing USB power supply.
In addition, the D+ pin is connected to the signal+ terminal and the DP pin, respectively, and the D-pin is connected to the SIGNAL-terminal 314 and the DM pin, respectively, so that differential transmission is formed between the USB card reader chip 5 and the car machine 6.
FIG. 7 is a schematic circuit diagram of the data storage application circuit provided in FIG. 4, in connection with a card reader.
In some embodiments, referring to FIGS. 4-7, the USB card reader chip 5 includes an SD_D0 pin (Secure DIGITAL DATA, refer to data line 0 of the SD card), an SD_D1 pin (Secure DIGITAL DATA, refer to data line 1 of the SD card), an SD_D2 pin (Secure DIGITAL DATA 2, refer to data line 2 of the SD card), and an SD_D3 pin (Secure DIGITAL DATA, refer to data line 3 of the SD card) for transmitting data information stored in the TF card, an SD_CMD pin (Secure Digital Command, command line of the SD card) as an instruction transmitting end, an SD_VCC pin (Secure Digital Voltage Source, voltage source of the SD card) as a voltage output end, an SD_CLK pin (Secure Digital Clock, clock line of the SD card for synchronizing data transmission), and an SD_CDZ pin (Secure DIGITAL CARD DETECT Zero, insertion detection line) for detecting whether the TF card is inserted.
The card reader 4 comprises a DAT0 pin (Date 0 refers to a pin connecting a TF card with a data line 0 (SD_D0 pin) and used for data transmission and communication, so that bidirectional data transmission between the TF card and the USB card reader chip 5 is realized, namely, the USB card reader chip 5 can send instructions, address information and data to the TF card through the pin and can also receive data from the TF card, the bidirectional communication capability enables the device to read the data in the TF card or write the data into the TF card, the DAT0 pin is matched with a Clock line (SD_CLK pin) and a Command line (SD_CMD pin) and used for data transmission in a data transmission process, the device can effectively interact with the TF card by encoding and decoding the data, so that a storage and reading function is realized, a DAT1 pin (Date 1 refers to a pin connecting the TF card with the data line 1 (SD_D1 pin), a DAT2 pin (Date 2 refers to a pin connecting the TF card with the data line 2 (SD_D1 pin) or writing the data into the TF card, and a DAT2 pin (Date 2 pin) refers to a data line (SD_D2 pin) is connected with the data line (SD_D1 pin) or a Command line (SD_CMD0 pin) and the like, and a Command line (SD_D3 pin) is used for receiving the input Voltage (Cd3) is a Command signal, and a Command terminal (Cv_Cd3) is commonly used for receiving the input terminal of the chip, and a Command signal (Cv_Cd0) is used for receiving the Command signal (Cv_Cv) or a Command terminal (Cv) is usually used for receiving a Command terminal (Cv).
In addition, the DAT0 pin is connected with the SD_D0 pin, the DAT1 pin is connected with the SD_D1 pin, the DAT2 pin is connected with the SD_D2 pin, and the DAT3 pin is connected with the SD_D3 pin, so that data information can be mutually transmitted between the TF card and the USB card reader 4 chip;
The CMD pin is connected with the SD_CMD pin, the SD_CD pin is connected with the SD_CDZ pin, the VDD pin is connected with the SD_VCC pin so that a second voltage signal is transmitted to the TF card, and the CLK pin is connected with the SD_CLK pin.
In the embodiment of the application, the USB card reader chip 5 can further comprise an SD_WP pin (Secure DIGITAL WRITE protection pin) which is not connected with the card reader 4 but directly grounded through a protection resistor R2, specifically, in the write protection mode, the SD_WP pin can control whether write operation is allowed to be performed on the SD card, wherein the SD_WP pin provides a mode of software control for opening or closing the write protection function, the USB card reader chip 5 can judge whether the SD card is in the write protection mode by monitoring the level state of the SD_WP pin and correspondingly determine whether write operation is allowed or forbidden to be performed on the SD card, in addition, the SD_WP pin has the function of providing the capability of flexibly controlling the write protection function of the SD card, namely, when the SD card is in the write protection mode, data cannot be written into the SD card, thus misoperation or data stored on the SD card can be effectively prevented from being modified or deleted by software, and meanwhile, in certain specific application scenarios, the security, the fine control of the SD card and the security, the read/write stability and the security can be further realized.
In some embodiments, as can be seen in connection with FIGS. 1-7, the data connector 3, the power chip 7, the USB reader chip 5, and the reader 4 cooperate to form a data storage application circuit that includes a first ESD protection component, a second ESD protection component D12, a third ESD protection component, a fourth ESD protection component, a common-mode inductance T1, and a reverse-connection prevention diode D11.
It should be noted that ESD (Electrostatic Discharge) is used in electronic devices to prevent and protect electrical circuits from damage caused by electrostatic discharge.
The reverse connection preventing diode (Reverse Polarity Protection Diode) has the function of preventing the power supply voltage from being connected into the circuit in a reverse way, and can play a role of protecting the reverse current from flowing into the circuit when the power supply voltage is connected in a reverse way, so that the components and the circuit board are prevented from being damaged.
In the embodiment of the application, the first ESD protection part and the second ESD protection part D12 are arranged between the data connector 3 and the USB card reader chip 5, and in addition, the third ESD protection part and the fourth ESD protection part are arranged between the USB card reader chip 5 and the card reader 4.
It is understood that the reverse connection preventing diode D11 is connected to the VBUS pin and the power chip 7, respectively, the power chip 7 is connected to the D3V 3pin and the A3V 3pin, and the common mode inductor T1 is connected to the DM pin and the D-pin, respectively.
In some embodiments, as shown in FIGS. 4-7, the first ESD protection component includes a first ESD protection D2 and a second ESD protection D1.
One end of the first ESD protection piece D2 is connected to the D-pin and the common-mode inductor T1, and the other end is grounded, and one end of the second ESD protection piece D1 is connected to the d+ pin and the DP pin, and the other end is grounded.
In addition, one end of the second ESD protection component D12 is connected to the VBUS pin, and the other end is grounded.
In some embodiments, as can be seen from FIGS. 4-7, the third ESD protection means comprises a third ESD protection D7, a fourth ESD protection D8, and a fifth ESD protection D9.
It should be noted that, one end of the third ESD protection device D7 is connected to the sd_d2 pin and the DAT2 pin, the other end is grounded, one end of the fourth ESD protection device D8 is connected to the sd_d3 pin and the DAT3 pin, the other end is grounded, and one end of the fifth ESD protection device D9 is connected to the sd_cmd pin and the CMD pin, respectively, and the other end is grounded.
In some embodiments, the fourth ESD protection component includes a sixth ESD protection D3, a seventh ESD protection D4, an eighth ESD protection D5, a ninth ESD protection D13, and a tenth ESD protection D6;
One end of the sixth ESD protection piece D3 is respectively connected with the SD_D0 pin and the DAT0 pin, the other end of the sixth ESD protection piece D3 is grounded, one end of the seventh ESD protection piece D4 is respectively connected with the SD_D1 pin and the DAT1 pin, the other end of the seventh ESD protection piece D4 is grounded, one end of the eighth ESD protection piece D5 is respectively connected with the SD_CDZ pin and the SD_CD pin, the other end of the eighth ESD protection piece D5 is grounded, one end of the ninth ESD protection piece D13 is respectively connected with the SD_VCC pin and the VDD pin, the other end of the ninth ESD protection piece D6 is grounded, and one end of the tenth ESD protection piece D6 is respectively connected with the SD_CLK pin and the other end of the eighth ESD protection piece is grounded.
As can be seen from fig. 1 to 7, the vehicle machine 6 is mounted on a new energy vehicle, is connected to a vehicle-mounted power supply on the new energy vehicle, and is also connected to a vehicle-mounted camera or a vehicle recorder mounted on the new energy vehicle.
The vehicle machine 6 is provided with a jack matched with the data connector 3 of the vehicle-mounted USB box 100, the inner surface of the jack is provided with a clamping groove matched with the locking piece 1112 of the vehicle-mounted USB box 100, and the locking piece 1112 and the clamping groove are matched with each other to guide the data connector 3 to be inserted into the jack.
In addition, the data information of the camera is processed by the car machine 6, then is transmitted to the USB card reader chip 5 of the vehicle-mounted USB box 100 through the data connector 3, is processed by the USB card reader chip 5, then is transmitted to the card reader 4 of the vehicle-mounted USB box 100 and is stored in the TF card of the vehicle-mounted USB box 100, or the data information stored in the TF card is transmitted to the USB card reader chip 5 through the card reader, is transmitted to the data connector 3 after being processed, and is read on the car machine 6.
In the embodiment of the application, the surface of the vehicle-mounted USB box 100 is flat, bubble-free, burr-free, sink mark-free, macroscopic defects and deformation-free, marks are clear, plastic parts in the vehicle-mounted USB box 100 cannot be cracked, deformation affecting the service performance and attractive appearance is avoided, metal parts are deformed and rust-free, in addition, the working temperature of the vehicle-mounted USB box 100 can be-40-85 ℃, the storage temperature can be-40-90 ℃, the nominal voltage can be DC 5V, and the working voltage range can be DC 4.75-5.25V.
In summary, the vehicle-mounted USB box provided by the embodiment of the utility model can enable the data information processed by the vehicle machine to be stored in the TF card and also can read the data information in the TF card to the vehicle machine by adding the design of the card reader, the USB card reader chip and the data connector. Therefore, compared with the traditional vehicle-mounted USB box, the vehicle-mounted USB box provided by the embodiment of the utility model has a certain novelty.
The foregoing is a further detailed description of the utility model in connection with specific/preferred embodiments, and it is not intended that the utility model be limited to such description. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model, and these are all within the scope of the utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420541602.7U CN222690160U (en) | 2024-03-20 | 2024-03-20 | Vehicle-mounted USB box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420541602.7U CN222690160U (en) | 2024-03-20 | 2024-03-20 | Vehicle-mounted USB box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222690160U true CN222690160U (en) | 2025-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420541602.7U Active CN222690160U (en) | 2024-03-20 | 2024-03-20 | Vehicle-mounted USB box |
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| Country | Link |
|---|---|
| CN (1) | CN222690160U (en) |
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- 2024-03-20 CN CN202420541602.7U patent/CN222690160U/en active Active
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