CN109902052B

CN109902052B - USB switching device capable of automatically switching data channels and display

Info

Publication number: CN109902052B
Application number: CN201910060389.1A
Authority: CN
Inventors: 范泽崴
Original assignee: Qisda Suzhou Co Ltd; Qisda Corp
Current assignee: Qisda Suzhou Co Ltd; Qisda Corp
Priority date: 2019-01-22
Filing date: 2019-01-22
Publication date: 2023-03-24
Anticipated expiration: 2039-01-22
Also published as: CN109902052A

Abstract

The invention provides a USB switching device capable of automatically switching data channels and a display. The USB switching device comprises a connecting end and a switching end which can be fixed with the connecting end in a magnetic attraction manner and is connected with the interface in a matching manner; the output side of the connecting end is provided with a first power supply pin, a first identification pin, a second identification pin, a first data pin and a second data pin; a second power supply pin, a third identification pin, a fourth identification pin, a third data pin and a fourth data pin are correspondingly arranged on the input side of the switching end; when the output side of the connecting end is magnetically attracted and fixed to the input side of the transfer end, the first power supply pin is electrically connected with the second power supply pin, and output signals of the output side of the transfer end correspond to input signals of the input side of the connecting end one by one; the switching terminal comprises a switching circuit which is used for switching and outputting data signals from the third data pin and the fourth data pin according to control signals from the third identification pin and the fourth identification pin.

Description

USB switching device capable of automatically switching data channels and display

Technical Field

The present invention relates to the field of data connectors, and more particularly, to a USB switching device capable of automatically switching data channels and a display using the USB switching device.

Background

In working life, the USB data wire is pulled carelessly, so that the USB connecting port is pulled to be failed, and particularly, a snake sheet in the USB wire is easy to break. For this reason, magnetic type USB connector charging wires are available on the market. The application has the advantages that a user can easily connect the wire with an electronic device (such as a mobile phone, a notebook computer and the like) by utilizing the magnetic USB connector, and the USB connector is not afraid of being pulled to damage if the electronic device is taken.

The magnetic-type connection is designed mainly for the charging requirement, and recently, manufacturers also provide a magnetic-type data and charging connection mode. For example, a mobile phone can be charged and data can be transmitted at the same time by connecting the mobile phone to other electronic devices through a connector. However, most of the USB magnetic charging data lines on the market can be charged by connecting two sides, but data transmission only can be conducted on one side, that is, when the USB data line plug is connected on the reverse side, only the power-on function does not have the data connection function. Taking USB2.0 DATA line as an example, the USB connector generally includes pins such as power VCC, DATA positive line DATA +, DATA negative line DATA-, and bottom line GND, where the pins of the male and female connectors are connected in a one-to-one correspondence manner when the USB connector is connected, and if the interface is connected in the reverse direction, the corresponding pins cannot correspond to each other, and if the DATA + pin of the male connector is in contact with the DATA-pin of the female interface, the circuit cannot be normally connected.

The single-side plug-in connection brings inconvenience to users, and the user experience of the magnetic USB charging data connector is greatly reduced. Although there is a design that data transmission can be achieved during double-sided connection, an additional MCU (micro control unit) is often used for control, and the circuit is complex and the cost is high.

Disclosure of Invention

In view of the above technical problems, the present invention provides a USB switching device capable of transmitting data on both front and back sides and automatically switching data channels with a simple circuit structure, and a display using the USB switching device.

The USB switching device capable of automatically switching the data channel comprises a connecting end and a switching end, wherein the switching end can be fixed with the connecting end in a magnetic attraction manner and is connected with an interface in a matching manner; the output side of the connecting end is provided with a first identification pin, a first data pin, a first power supply pin, a second data pin and a second identification pin, the first identification pin and the second identification pin are symmetrically arranged relative to the first power supply pin, and the first data pin and the second data pin are symmetrically arranged relative to the first power supply pin; a third identification pin, a third data pin, a second power supply pin, a fourth data pin and a fourth identification pin are correspondingly arranged on the input side of the switching end, the third identification pin and the fourth identification pin are symmetrically arranged relative to the second power supply pin, and the third data pin and the fourth data pin are symmetrically arranged relative to the second power supply pin; when the output side of the connecting end is magnetically attracted and fixed to the input side of the transfer end, the first power supply pin is electrically connected with the second power supply pin, and output signals of the output side of the transfer end correspond to input signals of the input side of the connecting end one by one; the switching terminal comprises a switching circuit, and the switching circuit is used for switching and outputting data signals from a third data pin and a fourth data pin according to control signals from the third identification pin and the fourth identification pin; when the first identification pin corresponds to the third identification pin and the second identification pin corresponds to the fourth identification pin, the first data pin is electrically connected to the third data pin, the second data pin is electrically connected to the fourth data pin, and the switching circuit outputs a data signal from the third data pin through the first channel and outputs a data signal from the fourth data pin through the second channel; when the first identification pin corresponds to the fourth identification pin and the second identification pin corresponds to the third identification pin, the first data pin is electrically connected to the fourth data pin, the second data pin is electrically connected to the third data pin, and the switching circuit outputs a data signal from the fourth data pin through the first channel and outputs a data signal from the third data pin through the second channel.

Preferably, when the output side of the connection end is magnetically attracted and fixed to the input side of the connection end in the first positive and negative directions, the first identification pin corresponds to the third identification pin, and the second identification pin corresponds to the fourth identification pin; when the output side of the connecting end is magnetically attracted and fixed to the input side of the transfer end in a second positive and negative direction, the first identification pin corresponds to the fourth identification pin, and the second identification pin corresponds to the third identification pin; wherein the surface orientations of the connecting ends are opposite in the first forward and reverse directions and the second forward and reverse directions.

Preferably, the first identification pin is electrically connected to the first power pin, and the second identification pin is grounded; when the first identification pin is correspondingly connected with the third identification pin and the second identification pin is correspondingly connected with the fourth identification pin, the switching circuit outputs a data signal from the third data pin through a first channel and outputs a data signal from the fourth data pin through a second channel according to a first voltage signal received from the third identification pin and a second voltage signal received from the fourth identification pin; when the first identification pin is correspondingly connected with the fourth identification pin and the second identification pin is correspondingly connected with the third identification pin, the switching circuit outputs a data signal from the fourth data pin through the first channel and outputs a data signal from the third data pin through the second channel according to a second voltage signal received from the third identification pin and a first voltage signal received from the fourth identification pin.

Preferably, the first identification pin is provided with a light output end, the third identification pin and the fourth identification pin are respectively provided with a light receiving end, and the light receiving end outputs a first control signal when receiving the optical signal of the light output end and outputs a second control signal when not receiving the optical signal of the light output end; when the first identification pin is correspondingly coupled with the third identification pin and the second identification pin is correspondingly coupled with the fourth identification pin, the switching circuit outputs a data signal from the third data pin by a first channel and outputs a data signal from the fourth data pin by a second channel according to a first control signal received from the third identification pin and a second control signal received from the fourth identification pin; when the first identification pin and the fourth identification pin are correspondingly coupled and the second identification pin and the third identification pin are correspondingly coupled, the switching circuit outputs a data signal from the fourth data pin through the first channel and outputs a data signal from the third data pin through the second channel according to a second control signal received from the third identification pin and a first control signal received from the fourth identification pin.

Preferably, the output side of the connection end is sequentially provided with a first identification pin, a first grounding pin, a first data pin, a first power supply pin, a second data pin, a second grounding pin and a second identification pin along a straight line, and the first grounding pin and the second grounding pin are symmetrically arranged relative to the first power supply pin; a third identification pin, a third grounding pin, a third data pin, a second power supply pin, a fourth data pin, a fourth grounding pin and a fourth identification pin are sequentially arranged along a straight line on the input side of the switching end, and the third grounding pin and the fourth grounding pin are symmetrically arranged relative to the second power supply pin; the first ground pin, the second ground pin, the third ground pin and the fourth ground pin are all grounded. Furthermore, the first grounding pin, the first data pin, the first power pin, the second data pin and the second grounding pin are arranged in the middle of the output side of the connecting end side by side, and the first identification pin and the second identification pin are respectively arranged at two end parts of the output side of the connecting end; the output side of the connecting end is also provided with a magnetic part which is annularly arranged on the peripheries of the first grounding pin, the first data pin, the first power supply pin, the second data pin and the second grounding pin.

Preferably, the input side of the connection end is provided with a USB female connector, the USB female connector has a power line, a data negative line, a data positive line and a ground line, the first power pin is electrically connected to the power line, the first data pin is electrically connected to the data negative line, the second data pin is electrically connected to the data positive line, and output signals at the output side of the transfer end correspond to input signals of the USB female connector one by one. Furthermore, the first identification pin is electrically connected to the power line, and the second identification pin is grounded; when the first identification pin is correspondingly connected with the third identification pin and the second identification pin is correspondingly connected with the fourth identification pin, the switching circuit receives a high level signal from the third identification pin and a low level signal from the fourth identification pin, and outputs a data signal corresponding to a data negative line of the third data pin in a first channel and outputs a data signal corresponding to a data positive line of the fourth data pin in a second channel; when the first identification pin and the fourth identification pin are correspondingly connected and the second identification pin and the third identification pin are correspondingly connected, the switching circuit receives a low level signal from the third identification pin and a high level signal from the fourth identification pin, and outputs a data signal corresponding to a data negative line of the fourth data pin through the first channel and outputs a data signal corresponding to a data positive line of the third data pin through the second channel.

Preferably, the switching circuit comprises two single-pole double-throw switch chips.

Preferably, the output side of the connection terminal is provided with a strip-shaped port, the outline of the strip-shaped port is in a shape of an annular runway, an ellipse or a rectangle, the first identification pin and the second identification pin are respectively arranged in two head areas of the strip-shaped port, and the first data pin, the first power supply pin and the second data pin are arranged in the middle area of the strip-shaped port.

The invention also provides a display, which is provided with a USB connecting port, wherein the USB connecting port comprises at least one USB switching device which can automatically switch the data channel.

Compared with the prior art, the USB switching device capable of automatically switching the data channel adopts a magnetic connection mode, and can transmit data and/or charge no matter the front side or the back side is connected with a USB interface, so that the defect that data can be transmitted only when a single side is connected with a USB connector on the market is overcome, and the switching circuit arranged in the switching end does not need additional complex circuit design and does not need additional MCU for identification control. The invention also applies the magnetic USB interface concept to the USB hub port of the display, adopts the magnetic connection port, can reduce the abrasion of the plugging and unplugging of the connector, increases the convenience in use, and does not worry about the condition that the USB port is broken even if the transmission line is pulled carelessly.

Drawings

FIG. 1 is a system diagram of a USB adapter capable of automatically switching data channels according to an embodiment of the present invention.

Fig. 2 is a schematic diagram illustrating the connection end of the embodiment of the invention inserted into the transfer end in the second front-back direction.

Fig. 3 is a schematic diagram of a switching circuit according to an embodiment of the invention.

Fig. 4 is a schematic structural diagram of a connection end and a transfer end according to an embodiment of the invention.

Fig. 5 is a schematic structural diagram of a transfer end and a transfer end according to another embodiment of the invention.

Fig. 6 is a schematic structural diagram of a display according to an embodiment of the invention.

Fig. 7 is a schematic structural diagram of a USB adaptor device in a separated state according to an embodiment of the present invention.

Fig. 8 is a schematic structural view of the USB adapter in a magnetic connection state according to an embodiment of the present invention.

Fig. 9 is a schematic structural diagram of a USB adaptor device according to an embodiment of the present invention after being connected to a USB male connector.

Fig. 10 is a schematic structural diagram of a connection output port according to an embodiment of the present invention.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

Referring to fig. 1 and fig. 2 in combination, fig. 1 is a system diagram of a USB switching device capable of automatically switching data channels according to an embodiment of the present invention, and fig. 2 is a diagram of a connection terminal according to an embodiment of the present invention inserted into the switching terminal in a second front-back direction. The invention relates to a USB switching device 100 capable of automatically switching data channels, which comprises a connecting end 1 and a switching end 2 which can be fixed with the connecting end 1 in a magnetic attraction manner and is connected with an interface in a matching manner.

The output side 10 of the connector 1 is provided with a first identification pin 11, a first data pin 12, a first power pin 13, a second data pin 14 and a second identification pin 15, the first identification pin 11 and the second identification pin 15 are symmetrically arranged relative to the first power pin 13, and the first data pin 12 and the second data pin 14 are symmetrically arranged relative to the first power pin 13. In one embodiment, the output side 10 of the connector 1 is sequentially provided with a first identification pin 11, a first ground pin 16, a first data pin 12, a first power pin 13, a second data pin 14, a second ground pin 17 and a second identification pin 15 in a linear arrangement, and the first ground pin 16 and the second ground pin 17 are symmetrically arranged with respect to the first power pin 13 and are both grounded.

The input side 20 of the switching end 2 is correspondingly provided with a third identification pin 21, a third data pin 22, a second power supply pin 23, a fourth data pin 24 and a fourth identification pin 25, the third identification pin 21 and the fourth identification pin 25 are symmetrically arranged relative to the second power supply pin 23, and the third data pin 22 and the fourth data pin 24 are symmetrically arranged relative to the second power supply pin 23. In one embodiment, the input side 20 of the adaptor 2 is sequentially provided with a third identification pin 21, a third ground pin 26, a third data pin 22, a second power pin 23, a fourth data pin 24, a fourth ground pin 27 and a fourth identification pin 25 in a linear arrangement, and the third ground pin 26 and the fourth ground pin 27 are symmetrically arranged with respect to the second power pin 23 and are both grounded.

When the output side 10 of the connection terminal 1 is magnetically fixed to the input side 20 of the connection terminal 2, the first power pin 13 is electrically connected to the second power pin 23, and the output signals of the output side 29 of the connection terminal 2 correspond to the input signals of the input side 19 of the connection terminal 1 one to one. In one embodiment, the first ground pin 16, the first data pin 12, the first power pin 13, the second data pin 14, and the second ground pin 17 are located side by side in the middle of the output side 10 of the connector 1, and the first identification pin 11 and the second identification pin 15 are located at two ends of the output side 10 of the connector 1, respectively. Preferably, the output side 10 of the connector 1 is further provided with a magnetic attraction portion 18, and the magnetic attraction portion 18 is disposed around the first ground pin 16, the first data pin 12, the first power pin 13, the second data pin 14 and the second ground pin 17. Similarly, the input side 20 of the transfer end 2 is also correspondingly provided with a magnetic part. The symmetrical structure design can ensure that the first power supply pin 13 and the second power supply pin 23 can be correctly aligned and connected when the connecting end 1 is connected into the transfer end 2 with the front side facing upwards or the reverse side facing upwards.

The switch 2 includes a switch circuit 3, and the switch circuit 3 is used for switching and outputting the data signals from the third data pin 22 and the fourth data pin 24 according to the control signals from the third identification pin 21 and the fourth identification pin 25. When the first identification pin 11 corresponds to the third identification pin 21 and the second identification pin 15 corresponds to the fourth identification pin 25, the first data pin 12 is electrically connected to the third data pin 22, the second data pin 14 is electrically connected to the fourth data pin 24, and the switching circuit 3 outputs the data signal from the third data pin 22 through the first channel 31 and outputs the data signal from the fourth data pin 24 through the second channel 32; when the first identification pin 11 corresponds to the fourth identification pin 25 and the second identification pin 15 corresponds to the third identification pin 21, the first data pin 12 is electrically connected to the fourth data pin 24, the second data pin 14 is electrically connected to the third data pin 22, and the switching circuit 3 outputs the data signal from the fourth data pin 24 through the first channel 31 and outputs the data signal from the third data pin 22 through the second channel 32.

In an embodiment, the switching circuit 3 may include two single-pole double-throw switch chips 30. Referring to fig. 3, fig. 3 is a schematic diagram of a switching circuit according to an embodiment of the invention. Taking an SA630 model single-pole double-throw switch commonly used by philips semiconductors in the art as an example, the third identification pin 21 and the fourth identification pin 25 are electrically connected to the gate pins (ENCH 1) of the two SA630 chips, the third data pin 22 and the fourth data pin 24 are electrically connected to the INPUT pins (INPUT) of the two SA630 chips, respectively, the gate pin (ENCH 1) of one SA630 chip is at a high level (e.g., corresponding to 5 volts), the corresponding INPUT pin (INPUT) and the first output pin (OUT 1) are turned on, the gate pin (ENCH 1) of the other SA630 chip is at a low level (e.g., corresponding to 0 volts), the corresponding INPUT pin (INPUT) and the second output pin (OUT 2) are turned on, so that the first output pins (OUT 1) of the two SA630 chips always output a certain data signal to the first channel 31, and the second output pins (OUT 2) of the two SA630 chips always output another data signal to the second channel 32. The above circuit structure for channel switching is only for explaining the working principle, and the invention is not limited thereto.

Preferably, as shown in fig. 1, when the output side 10 of the connection terminal 1 is magnetically fixed to the input side 20 of the connection terminal 2 in a first positive and negative direction, the first identification pin 11 corresponds to the third identification pin 21, and the second identification pin 15 corresponds to the fourth identification pin 25; as shown in fig. 2, when the output side 10 of the connection terminal 1 is magnetically attracted and fixed to the input side 20 of the connection terminal 2 in the second forward and backward directions, the first identification pin 11 corresponds to the fourth identification pin 25, and the second identification pin 15 corresponds to the third identification pin 21; wherein, the surface orientation of the connecting end 1 is just opposite when the first positive and negative direction and the second positive and negative direction are.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a connection end and a transfer end according to an embodiment of the invention. In this embodiment, the first identification pin 11 is electrically connected to the first power pin 13, and the second identification pin 15 is grounded; when the first identification pin 11 is connected to the third identification pin 21 and the second identification pin 15 is connected to the fourth identification pin 25, the switching circuit 3 outputs the data signal from the third data pin 22 through the first channel 31 and outputs the data signal from the fourth data pin 24 through the second channel 32 according to the first voltage signal received from the third identification pin 21 and the second voltage signal received from the fourth identification pin 25; when the first identification pin 11 is connected to the fourth identification pin 25 and the second identification pin 15 is connected to the third identification pin 21, the switching circuit 3 outputs the data signal from the fourth data pin 24 through the first channel 31 and outputs the data signal from the third data pin 22 through the second channel 32 according to the second voltage signal received from the third identification pin 21 and the first voltage signal received from the fourth identification pin 25.

Referring to fig. 5, fig. 5 is a schematic structural view of a connection end and a transfer end according to another embodiment of the invention. In this embodiment, the first identification pin 11 is provided with a light output end 41, the third identification pin 21 and the fourth identification pin 25 are respectively provided with a light receiving end 42, the light receiving end 41 outputs a first control signal when receiving the light signal of the light output end 41, and outputs a second control signal when not receiving the light signal of the light output end 41; when the first identification pin 11 is coupled to the third identification pin 21 and the second identification pin 15 is coupled to the fourth identification pin 25, the switching circuit 3 outputs the data signal from the third data pin 22 through the first channel 31 and outputs the data signal from the fourth data pin 24 through the second channel 32 according to the first control signal received from the third identification pin 21 and the second control signal received from the fourth identification pin 25; when the first identification pin 11 is coupled to the fourth identification pin 25 and the second identification pin 15 is coupled to the third identification pin 21, the switching circuit 3 outputs the data signal from the fourth data pin 24 through the first channel 31 and outputs the data signal from the third data pin 22 through the second channel 32 according to the second control signal received from the third identification pin 21 and the first control signal received from the fourth identification pin 25. The operation principle of this embodiment is different from that of the previous embodiment mainly in that the previous embodiment uses an electrical signal (such as voltage) as a basis for switching through electrical connection, and the embodiment is expanded to use optical signal triggering first. It should be noted that, the present invention may also be provided with the light output end 41 only at the second identification pin 15, and the first identification pin 11 is connected in a vacant manner, that is, the light output end is not provided at the vacant connection, and even no solid metal guide sheet is provided at the vacant connection; alternatively, the light output ends for emitting different optical signals are respectively disposed at the first identification pin 11 and the second identification pin 15, as long as the light receiving end 42 can generate different first control signals and second control signals after correspondingly receiving the optical signals at the first identification pin 11 and the second identification pin 15.

Preferably, an infrared optical transmitter may be disposed at the first identification pin 11 for transmitting an infrared signal, the second identification pin 15 is connected to the ground without transmitting infrared light, and an infrared optical receiver is disposed at both the third identification pin 21 and the fourth identification pin 25, so that when receiving an infrared signal, a voltage signal with a high level is received by the corresponding pin, which is used as a basis for switching. In practical applications, the light output end 41 and the light receiving end 42 can respectively obtain the required electric energy through corresponding power lines or through a self-contained battery.

With continued reference to fig. 4 and fig. 5, in an embodiment, the input side 19 of the connection terminal 1 is provided with a USB female connector 5, the USB female connector 5 has a power line 51 (VCC), a data negative line 52 (D-), a data positive line 53 (D +) and a ground line 54 (GND), the first power pin 13 is electrically connected to the power line 51, the first data pin 12 is electrically connected to the data negative line 52, the second data pin 14 is electrically connected to the data positive line 53, and the output signal of the output side 29 of the adaptor terminal 2 (see fig. 5, which is also applicable to the embodiment corresponding to fig. 4) corresponds to the input signal of the USB female connector 5.

Preferably, the first identification pin 11 is electrically connected to the power line 51, and the second identification pin 15 is grounded; when the first identification pin 11 is connected to the third identification pin 21 and the second identification pin 15 is connected to the fourth identification pin 25, the switching circuit 3 receives a high level signal from the third identification pin 21 and a low level signal from the fourth identification pin 25, and outputs a data signal from the corresponding data negative line 52 of the third data pin 22 in the first channel 31 and outputs a data signal from the corresponding data positive line 53 of the fourth data pin 24 in the second channel 32; when the first identification pin 11 is connected to the fourth identification pin 25 and the second identification pin 15 is connected to the third identification pin 21, the switch circuit 3 receives a low level signal from the third identification pin 21 and a high level signal from the fourth identification pin 25, and outputs a data signal from the corresponding data negative line 52 of the fourth data pin 24 through the first channel 31 and outputs a data signal from the corresponding data positive line 53 of the third data pin 22 through the second channel 32. Therefore, no matter the user operates the connecting end 1 to connect the switching end 2 from the front side or connect the switching end 2 from the back side, the data channels can be correctly connected and correspond, and the convenience in use is improved.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a display according to an embodiment of the invention. A display 200 of the present invention has a USB port 300. The USB port 300 includes at least one USB adapter 100 capable of switching data channels according to any one of the above embodiments or a combination thereof. The mobile electronic device 400 can be connected to the USB adapter device 100 through the USB data line 401, and transmit data and/or charge through the connection channel. The USB data line 401 may be a data line having various types of USB standard interfaces.

Referring to fig. 7 to 9, fig. 7 is a schematic structural view of a USB adaptor device in a separated state according to an embodiment of the present invention, fig. 8 is a schematic structural view of a USB adaptor device in a magnetic connection state according to an embodiment of the present invention, and fig. 9 is a schematic structural view of a USB adaptor device in an embodiment of the present invention after being connected to a USB male connector. The switching end 2 is integrated at one of the interfaces of the USB connection port 300 of the display 200, and has a magnetic structure, the connection end 1 is equivalent to a magnetic-type connection cap, a male connector of the USB data line 401 to be connected is inserted into the input side 19 of the connection end 1, and the output side 10 of the connection end 1 is magnetically connected with the switching end 2, and the connection end 1 can jump the pin of the male connector of the USB data line 401 to the pin defined by the output side 10 of the connection end 1.

With reference to fig. 10, fig. 10 is a schematic structural diagram of a connection end output side port according to an embodiment of the present invention. The outline of a strip-shaped port at the output side of the connecting end 1 can be in an annular runway shape, and a first identification pin 11, a first grounding pin 16, a first data pin 12, a first power supply pin 13, a second data pin 14, a second grounding pin 17 and a second identification pin 15 can be sequentially arranged in the strip-shaped port; the first identification pin 11 and the second identification pin 15 are respectively disposed at both head regions of the strip port, and the first ground pin 16, the first data pin 12, the first power pin 13, the second data pin 14, and the second ground pin 17 are disposed at a middle region of the strip port. The outline of the output port of the connection end 1 may also be an oval, rectangular, or other strip-shaped structure, but the invention is not limited thereto. The input side port of the transfer terminal 2 may also have a strip structure such as a circular track shape, an oval shape (as shown in fig. 7), a rectangular shape, etc., as long as effective magnetic adsorption with the output side port of the connection terminal 1 is ensured. Referring to the above embodiments, the pins in the input port of the transfer terminal 2 may be arranged corresponding to the pins in the output port of the transfer terminal 1.

The USB switching device capable of automatically switching the data channel adopts a magnetic connection mode, and can transmit data and/or charge no matter the front side or the back side is connected with a USB interface, so that the defect that data can be transmitted only by connecting a USB connector on a single side in the market is overcome, and the switching circuit arranged in the switching end does not need additional complex circuit design and does not need additional MCU for identification control.

The invention also applies the magnetic USB interface concept to the USB hub port of the display, adopts the magnetic connection port, can reduce the abrasion of the plugging and unplugging of the connector, increases the convenience in use, and does not worry about the condition that the USB port is broken even if the transmission line is pulled carelessly.

The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.

Claims

1. A USB switching device capable of automatically switching data channels comprises a connecting end and a switching end which can be fixed with the connecting end in a magnetic attraction manner and is connected with an interface in a matching manner; the method is characterized in that:

the output side of the connecting end is provided with a first identification pin, a first data pin, a first power supply pin, a second data pin and a second identification pin, the first identification pin and the second identification pin are symmetrically arranged relative to the first power supply pin, and the first data pin and the second data pin are symmetrically arranged relative to the first power supply pin; a third identification pin, a third data pin, a second power pin, a fourth data pin and a fourth identification pin are arranged on the input side of the switching end, the third identification pin and the fourth identification pin are symmetrically arranged relative to the second power pin, and the third data pin and the fourth data pin are symmetrically arranged relative to the second power pin; when the output side of the connecting end is magnetically attracted and fixed to the input side of the transfer end, the first power supply pin is electrically connected with the second power supply pin, and output signals of the output side of the transfer end correspond to input signals of the input side of the connecting end one by one;

the switching terminal comprises a switching circuit which is used for switching and outputting data signals from the third data pin and the fourth data pin according to control signals from the third identification pin and the fourth identification pin; when the first identification pin corresponds to the third identification pin and the second identification pin corresponds to the fourth identification pin, the first data pin is electrically connected to the third data pin, the second data pin is electrically connected to the fourth data pin, and the switching circuit outputs a data signal from the third data pin through a first channel and outputs a data signal from the fourth data pin through a second channel; when the first identification pin corresponds to the fourth identification pin and the second identification pin corresponds to the third identification pin, the first data pin is electrically connected to the fourth data pin, the second data pin is electrically connected to the third data pin, and the switching circuit outputs the data signal from the fourth data pin through the first channel and outputs the data signal from the third data pin through the second channel.

2. The USB adapter device according to claim 1, wherein when the output side of the connection terminal is magnetically attached to the input side of the adapter terminal in a first forward/reverse direction, the first identification pin corresponds to the third identification pin, and the second identification pin corresponds to the fourth identification pin; when the output side of the connecting end is magnetically attracted and fixed to the input side of the transfer end in a second positive and negative direction, the first identification pin corresponds to the fourth identification pin, and the second identification pin corresponds to the third identification pin; wherein the surface orientations of the connecting ends are opposite when the first positive and negative directions and the second positive and negative directions are opposite.

3. The USB adapter device of claim 1, wherein the first identification pin is electrically connected to the first power pin, and the second identification pin is grounded; when the first identification pin is correspondingly connected with the third identification pin and the second identification pin is correspondingly connected with the fourth identification pin, the switching circuit outputs a data signal from the third data pin through the first channel and outputs a data signal from the fourth data pin through the second channel according to a first voltage signal received from the third identification pin and a second voltage signal received from the fourth identification pin; when the first identification pin is correspondingly connected with the fourth identification pin and the second identification pin is correspondingly connected with the third identification pin, the switching circuit outputs the data signal from the fourth data pin through the first channel and outputs the data signal from the third data pin through the second channel according to the second voltage signal received from the third identification pin and the first voltage signal received from the fourth identification pin.

4. The USB adapter device according to claim 1, wherein the first identification pin has a light output end, the third identification pin and the fourth identification pin have light receiving ends respectively, the light receiving ends outputting a first control signal when receiving the light signal from the light output end and outputting a second control signal when not receiving the light signal from the light output end; when the first identification pin is correspondingly coupled with the third identification pin and the second identification pin is correspondingly coupled with the fourth identification pin, the switching circuit outputs a data signal from the third data pin through the first channel and outputs a data signal from the fourth data pin through the second channel according to the first control signal received from the third identification pin and the second control signal received from the fourth identification pin; when the first identification pin is correspondingly coupled with the fourth identification pin and the second identification pin is correspondingly coupled with the third identification pin, the switching circuit outputs a data signal from the fourth data pin through the first channel and outputs a data signal from the third data pin through the second channel according to the second control signal received from the third identification pin and the first control signal received from the fourth identification pin.

5. The USB adapter device according to claim 1, wherein the first identification pin, the first ground pin, the first data pin, the first power pin, the second data pin, the second ground pin and the second identification pin are disposed in a linear arrangement on the output side of the connection end, and the first ground pin and the second ground pin are disposed symmetrically with respect to the first power pin; the input side of the switching end is sequentially provided with a third identification pin, a third grounding pin, a third data pin, a second power supply pin, a fourth data pin, a fourth grounding pin and a fourth identification pin along a straight line, wherein the third grounding pin and the fourth grounding pin are symmetrically arranged relative to the second power supply pin; the first ground pin, the second ground pin, the third ground pin and the fourth ground pin are all grounded.

6. The USB adapter device according to claim 5, wherein the first ground pin, the first data pin, the first power pin, the second data pin and the second ground pin are located side by side in the middle of the output side of the connection terminal, and the first identification pin and the second identification pin are located at two ends of the output side of the connection terminal, respectively; the output side of the connecting end is also provided with a magnetic part which is annularly arranged at the peripheries of the first grounding pin, the first data pin, the first power supply pin, the second data pin and the second grounding pin.

7. The USB adapter device as claimed in claim 1, wherein the input side of the connection terminal is provided with a USB female connector having a power line, a data negative line, a data positive line and a ground line, the first power pin is electrically connected to the power line, the first data pin is electrically connected to the data negative line, the second data pin is electrically connected to the data positive line, and the output signals of the output side of the adapter terminal correspond to the input signals of the USB female connector.

8. The USB adapter device of claim 7, wherein the first identification pin is electrically connected to the power line, and the second identification pin is grounded; when the first identification pin is correspondingly connected with the third identification pin and the second identification pin is correspondingly connected with the fourth identification pin, the switching circuit receives a high level signal from the third identification pin and a low level signal from the fourth identification pin, and outputs a data signal corresponding to the data negative line from the third data pin by the first channel and outputs a data signal corresponding to the data positive line from the fourth data pin by the second channel; when the first identification pin is correspondingly connected with the fourth identification pin and the second identification pin is correspondingly connected with the third identification pin, the switching circuit receives a low level signal from the third identification pin and a high level signal from the fourth identification pin, and outputs a data signal corresponding to the data negative line from the fourth data pin by the first channel and outputs a data signal corresponding to the data positive line from the third data pin by the second channel.

9. The USB transfer device of claim 1, wherein the switching circuit comprises two single-pole double-throw switch chips.

10. The USB adaptor device according to claim 1, wherein the output side of the connector has a bar-shaped port, the bar-shaped port has a shape of a racetrack, an oval or a rectangle, the first identification pin and the second identification pin are respectively disposed at two end regions of the bar-shaped port, and the first data pin, the first power pin and the second data pin are disposed at a middle region of the bar-shaped port.

11. A display having a USB port, wherein the USB port comprises at least one USB switching device capable of self-switching data channels according to any one of claims 1-10.