A USB device

Abstract

A USB device, comprising: a shell (1), a USB male connector (2), a control circuit, and a USB female connector (3); the shell (1) is provided with the control circuit; the first side of the shell (1) is provided with the USB male connector (2); the second side of the shell (1) is provided with the USB female connector (3); the USB female connector (3) is a USB 2.0 female connector; the control circuit is a USB flash drive circuit or a card reader circuit; the GND pin, VBUS pin, D-pin, and D+ pin of the USB male connector (2) are electrically connected to the GND pin, VBUS pin, D-pin, and D+ pin of the USB female connector (3), respectively; the GND pin, VBUS pin, StdA_SSRX-pin, StdA_SSRX+ pin, GND_DRAIN pin, StdA_SSTX-pin, and StdA_SSTX+ pin of the USB male connector (2) are electrically connected to the control circuit. The USB device proposed in this application has low cost, small size and high reliability; the USB interface occupied by the USB device can also be used to output 5V voltage or input 5V voltage to charge the computer.

Description

Technical Field

[0001] The present application relates to a USB device, specifically a card reader or a USB flash drive. Background Art

[0002] The patent with the authorization announcement number CN207352651U introduces a USB flash drive with a USB socket (USB slot), but this patent solution needs to be applied to a control processor (USB HUB chip), so it is costly, bulky, and has low reliability (durability, stability);

[0003] Tablet computers usually have only one USB port (which is also the charging port). When this USB port is occupied, the tablet computer cannot be charged.

[0004] When a USB port is occupied, it can no longer output voltage as a charging port;

[0005] The purpose of this application is to enable the USB 3.0 interface of a computer to connect other USB 2.0 devices (such as a mouse and keyboard) at the same time as inserting a USB flash drive or a card reader at a lower cost, and to do so stably and reliably. Utility Model Content

[0006] In order to solve the above problems, the present application proposes a USB device, which is characterized by comprising:

[0007] Housing (1), USB male connector (2), control circuit, USB female connector (3);

[0008] The control circuit is arranged inside the shell (1); the USB male connector (2) is arranged on the first side of the shell (1); and the USB female connector (3) is arranged on the second side of the shell (1);

[0009] The USB male connector (2) supports the USB 3.0 standard; the USB female connector (3) is a USB 2.0 female connector; the control circuit is a USB disk circuit or a card reader circuit;

[0010] The GND pin, VBUS pin, D- pin and D+ pin of the USB male connector (2) are electrically connected to the GND pin, VBUS pin, D- pin and D+ pin of the USB female connector (3) respectively;

[0011] The GND pin, VBUS pin, StdA_SSRX- pin, StdA_SSRX+ pin, GND_DRAIN pin, StdA_SSTX- pin, and StdA_SSTX+ pin of the USB male connector (2) are electrically connected to the control circuit.

[0012] Optionally, the USB device further comprises:

[0013] The D- pin and the D+ pin of the USB male connector (2) are electrically connected to the control circuit.

[0014] Furthermore, the USB device is characterized by further comprising:

[0015] The USB male connector (2) is a USB TYPE-A male connector or a USB TYPE-C male connector.

[0016] Furthermore, the USB device is characterized by further comprising:

[0017] The U disk circuit comprises a USB 3.0 standard U disk main control chip and a storage chip; the U disk main control chip and the storage chip are electrically connected, and the U disk main control chip and the USB male connector (2) are electrically connected;

[0018] The card reader circuit comprises a card reader main control chip supporting the USB 3.0 standard and a card insertion slot; the card reader main control chip is electrically connected to the card insertion slot, and the card reader main control chip is electrically connected to the USB male connector (2).

[0019] Optionally, the USB device further comprises:

[0020] The housing (1) is provided with a card insertion port (4), and the card insertion slot is designed in the card insertion port (4).

[0021] Optionally, the USB device further comprises:

[0022] The USB flash drive main control chip is a GL3224 chip or a GL3213S chip.

[0023] Optionally, the USB device further comprises:

[0024] The card reader main control chip is a GL3224 chip or a GL3213S chip.

[0025] The application of the technical solution proposed in this application has at least the following beneficial effects compared with the prior art:

[0026] 1. Low cost, because no USB HUB chip (control processor) is required, saving costs;

[0027] 2. Small size. Since it does not require a USB HUB chip (control processor), it can be made smaller;

[0028] 3. High stability and reliability. Since there is no USB HUB chip and its peripheral circuit, the failure rate is reduced and it is more durable;

[0029] 4. The USB interface occupied by the USB device proposed in this application can also be used to output 5V voltage to charge the power bank;

[0030] 5. The USB interface occupied by the USB device proposed in this application can also be used to input 5V voltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a structural schematic diagram of a control circuit of a USB device proposed in this application when it is a USB disk circuit;

[0032] Figure 2 This is a structural schematic diagram of a control circuit of a USB device proposed in this application when it is a card reader circuit;

[0033] Among them, the reference numerals in the figures are: 1-housing; 2-USB male connector; 3-female connector; 4-card insertion port. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Since the USB 3.0 interface includes an independent USB 2.0 interface, an independent USB 2.0 interface can be separated from the USB 3.0 interface of the card reader or USB flash drive to connect a USB 2.0 device.

[0036] The present application proposes a USB device, characterized in that it includes:

[0037] Housing (1), USB male connector (2), control circuit (not shown), USB female connector (3);

[0038] The control circuit is arranged inside the shell (1); the USB male connector (2) is arranged on the first side of the shell (1); and the USB female connector (3) is arranged on the second side of the shell (1);

[0039] The USB male connector (2) supports the USB 3.0 standard; the USB female connector (3) is a USB 2.0 female connector; the control circuit is a USB disk circuit or a card reader circuit;

[0040] The GND pin, VBUS pin, D- pin and D+ pin of the USB male connector (2) are electrically connected to the GND pin, VBUS pin, D- pin and D+ pin of the USB female connector (3) respectively;

[0041] The GND pin, VBUS pin, StdA_SSRX- pin, StdA_SSRX+ pin, GND_DRAIN pin, StdA_SSTX- pin, and StdA_SSTX+ pin of the USB male connector (2) are electrically connected to the control circuit.

[0042] Optionally, the USB device further comprises:

[0043] The D-pin and D+ pin of the USB male connector (2) are electrically connected to the control circuit, so that the USB device can be plugged into the USB 2.0 interface for use. When the USB device is plugged into the USB 2.0 interface for use, the USB female connector (3) can no longer be connected to other USB devices, but can still be used to input or output 5V voltage.

[0044] Furthermore, the USB device is characterized by further comprising:

[0045] The USB male connector (2) is a USB TYPE-A male connector or a USB TYPE-C male connector; the USB TYPE-A male connector is convenient for supporting a desktop computer or a laptop computer, and the USB TYPE-C male connector is convenient for supporting a tablet computer.

[0046] Furthermore, the USB device is characterized by further comprising:

[0047] The U disk circuit comprises a USB 3.0 standard U disk main control chip and a storage chip; the U disk main control chip and the storage chip are electrically connected, and the U disk main control chip and the USB male head (2) are electrically connected;

[0048] The card reader circuit comprises a card reader main control chip supporting the USB 3.0 standard and a card insertion slot; the card reader main control chip is electrically connected to the card insertion slot, and the card reader main control chip is electrically connected to the USB male connector (2).

[0049] Optionally, the USB device further comprises:

[0050] The housing (1) is provided with a card insertion port (4), and the card insertion slot is designed in the card insertion port (4).

[0051] Optionally, the USB device further comprises:

[0052] The USB flash drive main control chip is a GL3224 chip or a GL3213S chip.

[0053] Optionally, the USB device further comprises:

[0054] The card reader main control chip is a GL3224 chip or a GL3213S chip.

[0055] For the specific circuit design of the GL3224 chip and the GL3213S chip, please refer to their user manuals or open source projects on the Internet, which will not be described here.

[0056] In the experiment, when the D-pin and D+pin of the USB male connector (2) are electrically connected to the control circuit (in the experiment, the GL3213S chip is used as the main control chip), the normal use of the USB female connector (3) will not be affected. In order to improve stability, the D-pin and D+pin of the main control chip of the control circuit can also be left floating, but this will cause the USB device to be unable to be used on the USB 2.0 interface.

[0057] The USB female socket (3) can be used to connect to a USB 2.0 device, and can also be used to input / output a 5V voltage.

[0058] Directions:

[0059] Insert the USB male connector (2) of the USB device into the USB 3.0 port of the computer.

[0060] If a mouse needs to be connected, just plug the mouse into the USB female socket (3) of the USB device;

[0061] If you need to obtain a 5V voltage to charge the power bank, just plug the charging cable of the power bank into the USB socket (3);

[0062] If the computer needs to be charged (the tablet computer has only one USB port which also serves as the charging port), the 5V power cord can be plugged into the USB female socket (3).

[0063] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A USB device, characterized in that: include: Housing (1), USB male connector (2), control circuit, USB female connector (3); The control circuit is arranged inside the shell (1); the USB male connector (2) is arranged on the first side of the shell (1); and the USB female connector (3) is arranged on the second side of the shell (1); The USB male connector (2) supports the USB 3.0 standard; the USB female connector (3) is a USB 2.0 female connector; the control circuit is a USB disk circuit or a card reader circuit; The GND pin, VBUS pin, D- pin and D+ pin of the USB male connector (2) are electrically connected to the GND pin, VBUS pin, D- pin and D+ pin of the USB female connector (3) respectively; The GND pin, VBUS pin, StdA_SSRX- pin, StdA_SSRX+ pin, GND_DRAIN pin, StdA_SSTX- pin, and StdA_SSTX+ pin of the USB male connector (2) are electrically connected to the control circuit.

2. A USB device as claimed in claim 1, characterized in that: Also includes: The D- pin and the D+ pin of the USB male connector (2) are electrically connected to the control circuit.

3. A USB device as claimed in claim 1, characterized in that: Also includes: The USB male connector (2) is a USB TYPE-A male connector or a USB TYPE-C male connector.

4. A USB device as claimed in any one of claims 1 to 3, characterized in that: Also includes: The U disk circuit is composed of a U disk main control chip and a storage chip supporting the USB 3.0 standard; the U disk main control chip and the storage chip are electrically connected, and the U disk main control chip and the USB male connector (2) are electrically connected; The card reader circuit is composed of a card reader main control chip and a card insertion slot supporting the USB 3.0 standard; the card reader main control chip is electrically connected to the card insertion slot, and the card reader main control chip is electrically connected to the USB male connector (2).

5. A USB device according to any one of claims 1 to 3, characterized in that: Also includes: The housing (1) is provided with a card insertion port (4), and a card insertion slot is designed in the card insertion port (4).

6. A USB device as claimed in claim 4, characterized in that: Also includes: The housing (1) is provided with a card insertion port (4), and the card insertion slot is designed in the card insertion port (4).

7. A USB device as claimed in claim 4, characterized in that: Also includes: The USB flash drive main control chip is a GL3224 chip or a GL3213S chip.

8. A USB device as claimed in claim 4, characterized in that: Also includes: The card reader main control chip is a GL3224 chip or a GL3213S chip.

9. A USB device as claimed in claim 6, characterized in that: Also includes: The card reader main control chip is a GL3224 chip or a GL3213S chip.

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